[Dnsmasq-discuss] DHCP errors with vlans and multiple subnets

Simon Kelley simon at thekelleys.org.uk
Tue Mar 4 17:59:10 UTC 2014 

So, the same machine, with the same MAC address, seems to be talking to
the dnsmasq DHCP server from (at least) three different subnets
more-or-less simultaneously. This is not good, as the DHCP protocol (for
IPv4, at least) assumes each interface will get _one_ address. Dnsmasq
is chasing its tail, giving the machine one address, then abandoning
that and giving it another, and so on.

The APs have interfaces on multiple VLANS? If so you need to do one of
two things

1) Get them to use different MAC addresses on each distinct VLAN,
2) Get them to use DHCP client-IDs and ensure that _those_ are distinct.

As a unique identifier, client-ids override MAC addresses, so you should
be OK leaving the interfaces with a single MAC address if you take the
client-id route.

Most DHCP clients have a way to configure which client-id they should use.



Cheers,

Simon.



On 03/03/14 15:46, David Joslin wrote:
> Cheers Simon
> 
> Here's the output of dnsmasq with log-dhcp set. It shows the requests
> from one particular access point (Room4UAP) over about 3 or 4 minutes.
> 
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: started, version
> 2.69test8-78-g6e0290a cachesize 1500
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: compile time options: IPv6
> GNU-getopt no-RTC no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP
> no-conntrack ipset Tomato-helper auth no-DNSSEC
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq[9848]: warning:
> interface tap21 does not currently exist
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: asynchronous logging enabled, queue
> limit is 5 messages
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: DHCP, IP range 10.10.99.101 --
> 10.10.99.200, lease time 1d
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: DHCP, IP range 10.10.70.101 --
> 10.10.70.200, lease time 1d
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: DHCP, IP range 10.10.30.101 --
> 10.10.30.200, lease time 1d
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: DHCP, IP range 10.10.20.101 --
> 10.10.20.200, lease time 1d
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: DHCP, IP range 10.10.10.151 --
> 10.10.10.200, lease time 1d
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: using local addresses only for
> domain office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: reading /etc/resolv.dnsmasq
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: using local addresses only for
> domain office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: using nameserver 208.67.222.222#53
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: using nameserver 208.67.220.220#53
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: read /etc/hosts - 5 addresses
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq[9848]: read /etc/dnsmasq/hosts/hosts - 41
> addresses
> Mar  3 13:39:24 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: read /etc/dnsmasq/dhcp/dhcp-hosts
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP.office.nkcc.org.uk
> <http://room5uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.10.180
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP to the DHCP lease of 10.10.10.180 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP.office.nkcc.org.uk
> <http://managementsuiteuap.office.nkcc.org.uk/> to the DHCP lease of
> 10.10.30.195 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.21
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP to the DHCP lease of 10.10.30.195 because
> the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.21
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC.office.nkcc.org.uk
> <http://auditoriumcentrewestuapac.office.nkcc.org.uk/> to the DHCP lease
> of 10.10.10.162 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.24
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC to the DHCP lease of 10.10.10.162
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.24
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP.office.nkcc.org.uk
> <http://room4uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.30.153
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:39:24 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP to the DHCP lease of 10.10.30.153 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:37 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 available DHCP
> range: 10.10.10.151 -- 10.10.10.200
> Mar  3 13:40:37 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 vendor class: ubnt
> Mar  3 13:40:37 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 client provides
> name: Room4UAP
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 DHCPDISCOVER(br0)
> dc:9f:db:e8:98:b8 
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 tags: br0
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 DHCPOFFER(br0)
> 10.10.10.153 dc:9f:db:e8:98:b8 
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 requested options:
> 43:vendor-encap
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 next server: 10.10.10.1
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  1
> option: 53 message-type  2
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 54 server-identifier  10.10.10.1
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 28 broadcast  10.10.10.255
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option:  6 dns-server  10.10.10.1
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option:  3 router  10.10.10.1
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 available DHCP
> range: 10.10.20.101 -- 10.10.20.200
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 vendor class: ubnt
> Mar  3 13:40:40 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 client provides
> name: Room4UAP
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPDISCOVER(br1)
> dc:9f:db:e8:98:b8 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 tags: br1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPOFFER(br1)
> 10.10.20.154 dc:9f:db:e8:98:b8 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 43:vendor-encap
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 next server: 10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  1
> option: 53 message-type  2
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 54 server-identifier  10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 28 broadcast  10.10.20.255
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  6 dns-server  10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  3 router  10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 available DHCP
> range: 10.10.30.101 -- 10.10.30.200
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 vendor class: ubnt
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 client provides
> name: Room4UAP
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPDISCOVER(br2)
> dc:9f:db:e8:98:b8 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 tags: br2
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPOFFER(br2)
> 10.10.30.153 dc:9f:db:e8:98:b8 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 43:vendor-encap
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 next server: 10.10.30.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  1
> option: 53 message-type  2
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 54 server-identifier  10.10.30.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 28 broadcast  10.10.30.255
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  6 dns-server  10.10.30.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  3 router  10.10.30.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 available DHCP
> range: 10.10.10.151 -- 10.10.10.200
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 vendor class: ubnt
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 client provides
> name: Room4UAP
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 DHCPREQUEST(br0)
> 10.10.10.153 dc:9f:db:e8:98:b8 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 tags: br0
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 DHCPACK(br0)
> 10.10.10.153 dc:9f:db:e8:98:b8 Room4UAP
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 requested options:
> 43:vendor-encap
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 next server: 10.10.10.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  1
> option: 53 message-type  5
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 54 server-identifier  10.10.10.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option: 28 broadcast  10.10.10.255
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option:  6 dns-server  10.10.10.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  8
> option: 12 hostname  Room4UAP
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 659364417 sent size:  4
> option:  3 router  10.10.10.1
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP.office.nkcc.org.uk
> <http://room4uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.10.153
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP to the DHCP lease of 10.10.10.153 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP.office.nkcc.org.uk
> <http://room5uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.10.180
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP to the DHCP lease of 10.10.10.180 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP.office.nkcc.org.uk
> <http://managementsuiteuap.office.nkcc.org.uk/> to the DHCP lease of
> 10.10.30.195 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.21
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP to the DHCP lease of 10.10.30.195 because
> the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.21
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC.office.nkcc.org.uk
> <http://auditoriumcentrewestuapac.office.nkcc.org.uk/> to the DHCP lease
> of 10.10.10.162 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.24
> Mar  3 13:40:43 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC to the DHCP lease of 10.10.10.162
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.24
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 available DHCP
> range: 10.10.20.101 -- 10.10.20.200
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 vendor class: ubnt
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 client provides
> name: Room4UAP
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPDISCOVER(br1)
> dc:9f:db:e8:98:b8 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 tags: br1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPOFFER(br1)
> 10.10.20.154 dc:9f:db:e8:98:b8 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 43:vendor-encap
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 next server: 10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  1
> option: 53 message-type  2
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 54 server-identifier  10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 28 broadcast  10.10.20.255
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  6 dns-server  10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  3 router  10.10.20.1
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 available DHCP
> range: 10.10.30.101 -- 10.10.30.200
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 vendor class: ubnt
> Mar  3 13:40:43 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 client provides
> name: Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPDISCOVER(br2)
> dc:9f:db:e8:98:b8 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 tags: br2
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPOFFER(br2)
> 10.10.30.153 dc:9f:db:e8:98:b8 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 43:vendor-encap
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 next server: 10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  1
> option: 53 message-type  2
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 54 server-identifier  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 28 broadcast  10.10.30.255
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  6 dns-server  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  3 router  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 available DHCP
> range: 10.10.20.101 -- 10.10.20.200
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 vendor class: ubnt
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 client provides
> name: Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPREQUEST(br1)
> 10.10.20.154 dc:9f:db:e8:98:b8 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 tags: br1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPACK(br1)
> 10.10.20.154 dc:9f:db:e8:98:b8 Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 43:vendor-encap
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 next server: 10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  1
> option: 53 message-type  5
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 54 server-identifier  10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 28 broadcast  10.10.20.255
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  6 dns-server  10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  8
> option: 12 hostname  Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  3 router  10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP.office.nkcc.org.uk
> <http://room4uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.20.154
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP to the DHCP lease of 10.10.20.154 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP.office.nkcc.org.uk
> <http://room5uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.10.180
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP to the DHCP lease of 10.10.10.180 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP.office.nkcc.org.uk
> <http://managementsuiteuap.office.nkcc.org.uk/> to the DHCP lease of
> 10.10.30.195 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP to the DHCP lease of 10.10.30.195 because
> the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC.office.nkcc.org.uk
> <http://auditoriumcentrewestuapac.office.nkcc.org.uk/> to the DHCP lease
> of 10.10.10.162 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.24
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC to the DHCP lease of 10.10.10.162
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.24
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 available DHCP
> range: 10.10.30.101 -- 10.10.30.200
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 vendor class: ubnt
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 client provides
> name: Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPREQUEST(br2)
> 10.10.30.153 dc:9f:db:e8:98:b8 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 tags: br2
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPACK(br2)
> 10.10.30.153 dc:9f:db:e8:98:b8 Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 43:vendor-encap
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 next server: 10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  1
> option: 53 message-type  5
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 54 server-identifier  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 28 broadcast  10.10.30.255
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  6 dns-server  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  8
> option: 12 hostname  Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  3 router  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP.office.nkcc.org.uk
> <http://room4uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.30.153
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP to the DHCP lease of 10.10.30.153 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP.office.nkcc.org.uk
> <http://room5uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.10.180
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP to the DHCP lease of 10.10.10.180 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP.office.nkcc.org.uk
> <http://managementsuiteuap.office.nkcc.org.uk/> to the DHCP lease of
> 10.10.30.195 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP to the DHCP lease of 10.10.30.195 because
> the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC.office.nkcc.org.uk
> <http://auditoriumcentrewestuapac.office.nkcc.org.uk/> to the DHCP lease
> of 10.10.10.162 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.24
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC to the DHCP lease of 10.10.10.162
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.24
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 available DHCP
> range: 10.10.20.101 -- 10.10.20.200
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 vendor class: ubnt
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 client provides
> name: Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPREQUEST(br1)
> 10.10.20.154 dc:9f:db:e8:98:b8 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 tags: br1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 DHCPACK(br1)
> 10.10.20.154 dc:9f:db:e8:98:b8 Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 requested options:
> 43:vendor-encap
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 next server: 10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  1
> option: 53 message-type  5
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 54 server-identifier  10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option: 28 broadcast  10.10.20.255
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  6 dns-server  10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  8
> option: 12 hostname  Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 347580111 sent size:  4
> option:  3 router  10.10.20.1
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP.office.nkcc.org.uk
> <http://room4uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.20.154
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP to the DHCP lease of 10.10.20.154 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP.office.nkcc.org.uk
> <http://room5uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.10.180
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP to the DHCP lease of 10.10.10.180 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP.office.nkcc.org.uk
> <http://managementsuiteuap.office.nkcc.org.uk/> to the DHCP lease of
> 10.10.30.195 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP to the DHCP lease of 10.10.30.195 because
> the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC.office.nkcc.org.uk
> <http://auditoriumcentrewestuapac.office.nkcc.org.uk/> to the DHCP lease
> of 10.10.10.162 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.24
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC to the DHCP lease of 10.10.10.162
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.24
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 available DHCP
> range: 10.10.30.101 -- 10.10.30.200
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 vendor class: ubnt
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 client provides
> name: Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPREQUEST(br2)
> 10.10.30.153 dc:9f:db:e8:98:b8 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 tags: br2
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 DHCPACK(br2)
> 10.10.30.153 dc:9f:db:e8:98:b8 Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 1:netmask, 3:router, 6:dns-server, 12:hostname, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 15:domain-name, 28:broadcast, 42:ntp-server, 
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 requested options:
> 43:vendor-encap
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 next server: 10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  1
> option: 53 message-type  5
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 54 server-identifier  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 51 lease-time  1d
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 58 T1  12h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 59 T2  21h
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option: 28 broadcast  10.10.30.255
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  6 dns-server  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  8
> option: 12 hostname  Room4UAP
> Mar  3 13:40:46 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 314493589 sent size:  4
> option:  3 router  10.10.30.1
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP.office.nkcc.org.uk
> <http://room4uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.30.153
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room4UAP to the DHCP lease of 10.10.30.153 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP.office.nkcc.org.uk
> <http://room5uap.office.nkcc.org.uk/> to the DHCP lease of 10.10.10.180
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name Room5UAP to the DHCP lease of 10.10.10.180 because the name
> exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.23
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP.office.nkcc.org.uk
> <http://managementsuiteuap.office.nkcc.org.uk/> to the DHCP lease of
> 10.10.30.195 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name ManagementSuiteUAP to the DHCP lease of 10.10.30.195 because
> the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.21
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC.office.nkcc.org.uk
> <http://auditoriumcentrewestuapac.office.nkcc.org.uk/> to the DHCP lease
> of 10.10.10.162 because the name exists in /etc/dnsmasq/hosts/hosts with
> address 10.10.99.24
> Mar  3 13:40:46 eastgaterouter daemon.warn dnsmasq-dhcp[9848]: not
> giving name AuditoriumCentreWestUAPAC to the DHCP lease of 10.10.10.162
> because the name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.24
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 available DHCP
> range: 10.10.10.151 -- 10.10.10.200
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 vendor class: MSFT 5.0
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 client provides
> name: NKCC-Guest-PC
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 DHCPINFORM(br0)
> 10.10.10.174 00:1d:09:0a:39:51 
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 tags: known, br0
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 DHCPACK(br0)
> 10.10.10.174 00:1d:09:0a:39:51 NKCC-Guest-PC
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 requested options:
> 1:netmask, 15:domain-name, 3:router, 6:dns-server, 
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 requested options:
> 44:netbios-ns, 46:netbios-nodetype, 47:netbios-scope, 
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 requested options:
> 31:router-discovery, 33:static-route, 121:classless-static-route, 
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 requested options:
> 249, 43:vendor-encap, 252
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 next server: 10.10.10.1
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size:  1
> option: 53 message-type  5
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size:  4
> option: 54 server-identifier  10.10.10.1
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size:  4
> option:  1 netmask  255.255.255.0
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size:  4
> option: 28 broadcast  10.10.10.255
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size:  4
> option:  6 dns-server  10.10.10.1
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size: 18
> option: 15 domain-name  office.nkcc.org.uk <http://office.nkcc.org.uk/>
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size:  4
> option: 44 netbios-ns  10.10.10.1
> Mar  3 13:43:10 eastgaterouter daemon.info
> <http://daemon.info/> dnsmasq-dhcp[9848]: 321826932 sent size:  4
> option:  3 router  10.10.10.1
> 
> 
> On 3 March 2014 13:31, Simon Kelley <simon at thekelleys.org.uk
> <mailto:simon at thekelleys.org.uk>> wrote:
> 
>     First stage is to set log-dhcp in your configuration, which will add
>     lots of extra useful information to the logging.
> 
> 
>     Cheers,
> 
>     Simon.
> 
>     ,On 03/03/14 13:20, David Joslin wrote:
> 
>         I have dnsmasq (version 2.69test8-78-g6e0290a) on a router
>         running the
>         tomato firmware (and I hope it's OK to post questions about such a
>         router here). My network is split into several vlans, each with
>         its own
>         subnet, and one of the vlans has several wi-fi access points which
>         obtain their IP addresses from the router using DHCP. The access
>         points
>         all have entries in the dhcp-hosts file reserving certain IP
>         addresses
>         for them. Up till recently everything was working fine - the access
>         points always picked up the correct addresses.
> 
>         However, something weird is now happening. When the access
>         points now
>         request addresses, dnsmasq is offering addresses from the other
>         subnets
>         and isn't offering the addresses reserved in dhcp-hosts. Dnsmasq
>         then
>         logs an error saying that the offered address conflicts with the
>         address
>         recorded in the hosts file.
> 
>         The messages from the log are shown below.
> 
>         I've checked over and over again and I can't find anything that's
>         changed in the configuration of the network or router and I
>         can't work
>         out what's causing this.
> 
>         Any help would be gratefully received.
> 
>         Thanks.
> 
>         David
> 
> 
>         DHCPDISCOVER(br0) dc:9f:db:e8:98:b8
>         DHCPOFFER(br0) 10.10.10.153 dc:9f:db:e8:98:b8
>         DHCPDISCOVER(br1) dc:9f:db:e8:98:b8
>         DHCPOFFER(br1) 10.10.20.154 dc:9f:db:e8:98:b8
>         DHCPDISCOVER(br2) dc:9f:db:e8:98:b8
>         DHCPOFFER(br2) 10.10.30.153 dc:9f:db:e8:98:b8
>         DHCPREQUEST(br0) 10.10.10.153 dc:9f:db:e8:98:b8
>         DHCPACK(br0) 10.10.10.153 dc:9f:db:e8:98:b8 Room4UAP
>         not giving name Room4UAP to the DHCP lease of 10.10.10.153
>         because the
>         name exists in /etc/dnsmasq/hosts/hosts with address 10.10.99.22
> 
> 
>         _________________________________________________
>         Dnsmasq-discuss mailing list
>         Dnsmasq-discuss at lists.__thekelleys.org.uk
>         <mailto:Dnsmasq-discuss at lists.thekelleys.org.uk>
>         http://lists.thekelleys.org.__uk/mailman/listinfo/dnsmasq-__discuss
>         <http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss>
> 
> 
> 
>     _________________________________________________
>     Dnsmasq-discuss mailing list
>     Dnsmasq-discuss at lists.__thekelleys.org.uk
>     <mailto:Dnsmasq-discuss at lists.thekelleys.org.uk>
>     http://lists.thekelleys.org.__uk/mailman/listinfo/dnsmasq-__discuss
>     <http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss>
> 
> 
> 
> 
> _______________________________________________
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