[Dnsmasq-discuss] dnsmasq offering dynamic instead of static dhcp leases - what am I doing incorrectly?

[Simon Kelley]

On 12/02/16 00:29, Michael Evans wrote:
> Re-sending after temporarily subscribing
> 
> On Thu, Feb 11, 2016 at 4:11 PM Michael Evans <mjevans1983 at gmail.com> wrote:
> 
>> My goal is to have dnsmasq serve DHCP leases on an interface, either for
>> static addresses (either within that interface's very large subnet mask)
>>
>> 71: eth1 at if72: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
>> state UP group default qlen 1000
>>     link/ether de:ad:be:af:f0:0d brd ff:ff:ff:ff:ff:ff
>>     inet 10.0.0.2/16 brd 10.0.255.255 scope global eth1
>>        valid_lft forever preferred_lft forever
>>     inet6 fe80::dcad:beff:feaf:f00d/64 scope link
>>        valid_lft forever preferred_lft forever
>>
>>
>> Using a config-dir entry (which is scanned according to the ranges)
>>
>>
>> interface=eth1
>> expand-hosts
>>
>> dhcp-leasefile=/var/lib/misc/dnsmasq.leases
>>
>> domain=example.com,10.0.0.0/16,local
>>
>> dhcp-range=10.0.4.1,10.0.8.250,255.255.0.0,1h
>> dhcp-range=tag:staticdhcp,10.0.0.0,static,255.255.0.0,1h
>>
>> # dhcp-options slipped for brevity
>>
>> dhcp-host=de:ad:be:ef:55:55,id:*,10.0.0.10 # ,hnstatic,infinite
>>
>>
>> Yet the offered address is from the dynamic range.
>>
>>
>> Feb 12 00:09:00 testDnsmasq dnsmasq[312]: started, version 2.72 cachesize
>> 150
>> Feb 12 00:09:00 testDnsmasq dnsmasq[312]: compile time options: IPv6
>> GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth
>> DNSSEC loop-detect
>> Feb 12 00:09:00 testDnsmasq dnsmasq-dhcp[312]: DHCP, static leases only on
>> 10.0.0.0, lease time 1h
>> Feb 12 00:09:00 testDnsmasq dnsmasq-dhcp[312]: DHCP, IP range 10.0.4.1 --
>> 10.0.8.250, lease time 1h
>> Feb 12 00:09:00 testDnsmasq dnsmasq[312]: using local addresses only for
>> domain 0.10.in-addr.arpa
>> Feb 12 00:09:00 testDnsmasq dnsmasq[312]: reading /etc/resolv.conf
>> Feb 12 00:09:00 testDnsmasq dnsmasq[312]: using local addresses only for
>> domain 0.10.in-addr.arpa
>> Feb 12 00:09:00 testDnsmasq dnsmasq[312]: using nameserver 192.168.1.1#53
>> Feb 12 00:09:00 testDnsmasq dnsmasq[312]: read /etc/hosts - 4 addresses
>> Feb 12 00:09:00 testDnsmasq systemd[1]: Started dnsmasq - A lightweight
>> DHCP and caching DNS server.
>> Feb 12 00:09:06 testDnsmasq dnsmasq-dhcp[312]: 2573025057 available DHCP
>> range: 10.0.4.1 -- 10.0.8.250
>> Feb 12 00:09:06 testDnsmasq dnsmasq-dhcp[312]: 2573025057 available DHCP
>> subnet: 10.0.0.0/255.255.0.0
>> Feb 12 00:09:06 testDnsmasq dnsmasq-dhcp[312]: 2573025057 client provides
>> name: testStatic
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057
>> DHCPDISCOVER(eth1) de:ad:be:af:55:55
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 tags: eth1
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 DHCPOFFER(eth1)
>> 10.0.7.62 de:ad:be:af:55:55
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 requested
>> options: 1:netmask, 28:broadcast, 2:time-offset, 3:router,
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 requested
>> options: 15:domain-name, 6:dns-server, 119:domain-search,
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 requested
>> options: 12:hostname, 44:netbios-ns, 47:netbios-scope,
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 requested
>> options: 26:mtu, 121:classless-static-route, 42:ntp-server
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 next server:
>> 10.0.0.2
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  1
>> option: 53 message-type  2
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option: 54 server-identifier  10.0.0.2
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option: 51 lease-time  1h
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option: 58 T1  30m
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option: 59 T2  52m30s
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option: 28 broadcast  10.0.255.255
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option:  6 dns-server  10.0.0.2
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size: 11
>> option: 15 domain-name  example.com
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  2
>> option: 26 mtu  9000
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option:  3 router  10.0.0.1
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 sent size:  4
>> option:  1 netmask  255.255.0.0
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 available DHCP
>> range: 10.0.4.1 -- 10.0.8.250
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 available DHCP
>> subnet: 10.0.0.0/255.255.0.0
>> Feb 12 00:09:09 testDnsmasq dnsmasq-dhcp[312]: 2573025057 client provides
>> name: testStatic
>>
>>
>> What am I doing incorrectly?  How should the configuration file look?
>>

dhcp-host=de:ad:be:ef:55:55,id:*,10.0.0.10 # ,hnstatic,infinite


This is the first thing I'd be suspicious of, the fields in dhcp-host
can come in any order, and they're typed with a load of dodgy heuristics
which I think your commenting-out may have confused. Try actually
deleting the commented out second and see if that helps.


Cheers,

Simon.