[Dnsmasq-discuss] DHCP server not assigning IP to RTMU86
Kamil
kamil at incmachines.com
Wed May 11 11:41:17 UTC 2022
Hi!
I've configured Dnsmasq with the following config:
interface=eth0
> bind-interfaces
> dhcp-option=3,192.168.6.1
> dhcp-option=6,8.8.8.8
> set long-lasting records.
> dhcp-range=192.168.6.11,192.168.6.20,255.255.255.0,12h
>
And most of the devices work just fine (here is the example syslog):
May 10 16:25:11 myhost dnsmasq-dhcp[1862]: DHCP packet received on eth0
> which has no address
> May 10 16:25:12 myhost dhcpcd[740]: eth0: carrier acquired
> May 10 16:25:12 myhost kernel: [ 1598.601129] bcmgenet fd580000.ethernet
> eth0: Link is Up - 100Mbps/Full - flow control off
> May 10 16:25:12 myhost dhcpcd[740]: eth0: IAID 01:XX:XX:90
> May 10 16:25:12 myhost dhcpcd[740]: eth0: adding address <mac>
> May 10 16:25:12 myhost dhcpcd[740]: eth0: probing address 192.168.6.1/24
> May 10 16:25:12 myhost avahi-daemon[384]: Joining mDNS multicast group on
> interface eth0.IPv6 with address fe80::XX:XX:XX:d2c.
> May 10 16:25:12 myhost avahi-daemon[384]: New relevant interface eth0.IPv6
> for mDNS.
> May 10 16:25:12 myhost avahi-daemon[384]: Registering new address record
> for fe80::XX:XX:XX:d2c on eth0.*.
> May 10 16:25:12 myhost dhcpcd[740]: eth0: soliciting an IPv6 router
> May 10 16:25:12 myhost dnsmasq-dhcp[1862]: DHCP packet received on eth0
> which has no address
> May 10 16:25:14 myhost dnsmasq-dhcp[1862]: DHCP packet received on eth0
> which has no address
> May 10 16:25:16 myhost dnsmasq-dhcp[1862]: DHCP packet received on eth0
> which has no address
> May 10 16:25:16 myhost dhcpcd[740]: eth0: using static address
> 192.168.6.1/24
> May 10 16:25:17 myhost avahi-daemon[384]: Joining mDNS multicast group on
> interface eth0.IPv4 with address 192.168.6.1.
> May 10 16:25:17 myhost avahi-daemon[384]: New relevant interface eth0.IPv4
> for mDNS.
> May 10 16:25:17 myhost dhcpcd[740]: eth0: adding route to 192.168.6.0/24
> May 10 16:25:17 myhost avahi-daemon[384]: Registering new address record
> for 192.168.6.1 on eth0.IPv4.
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 available DHCP
> range: 192.168.6.11 -- 192.168.6.20
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 DHCPDISCOVER(eth0)
> <mac>
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 tags: known, eth0
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 DHCPOFFER(eth0)
> 192.168.6.15 <mac>
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 requested options:
> 1:netmask, 3:router, 28:broadcast, 6:dns-server
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 next server:
> 192.168.6.1
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 1
> option: 53 message-type 2
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 54 server-identifier 192.168.6.1
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 51 lease-time infinite
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 1 netmask 255.255.255.0
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 28 broadcast 192.168.6.255
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 3 router 192.168.6.1
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 6 dns-server 192.168.6.1
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 available DHCP
> range: 192.168.6.11 -- 192.168.6.20
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 DHCPREQUEST(eth0)
> 192.168.6.15 <mac>
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 tags: known, eth0
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 DHCPACK(eth0)
> 192.168.6.15 <mac>
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 requested options:
> 1:netmask, 3:router, 28:broadcast, 6:dns-server
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 next server:
> 192.168.6.1
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 1
> option: 53 message-type 5
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 54 server-identifier 192.168.6.1
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 51 lease-time infinite
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 1 netmask 255.255.255.0
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 28 broadcast 192.168.6.255
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 3 router 192.168.6.1
> May 10 16:25:20 myhost dnsmasq-dhcp[1862]: 1567457464 sent size: 4
> option: 6 dns-server 192.168.6.1
> May 10 16:25:26 myhost dhcpcd[740]: eth0: no IPv6 Routers available
Except one - the RTMU86 NFC reader to which Dnsmasq doesn't assign the IP
address. Here syslog shows:
May 10 16:26:15 myhost dhcpcd[740]: eth0: carrier acquired
> May 10 16:26:15 myhost kernel: [ 1661.024489] bcmgenet fd580000.ethernet
> eth0: Link is Up - 100Mbps/Full - flow control off
> May 10 16:26:15 myhost dhcpcd[740]: eth0: IAID 01:XX:XX:90
> May 10 16:26:15 myhost dhcpcd[740]: eth0: adding address fe80::XX:XX:XX:d2c
> May 10 16:26:15 myhost dhcpcd[740]: eth0: probing address 192.168.6.1/24
> May 10 16:26:15 myhost avahi-daemon[384]: Joining mDNS multicast group on
> interface eth0.IPv6 with address fe80::XX:XX:XX:d2c.
> May 10 16:26:15 myhost avahi-daemon[384]: New relevant interface eth0.IPv6
> for mDNS.
> May 10 16:26:15 myhost avahi-daemon[384]: Registering new address record
> for fe80::XX:XX:XX:d2c on eth0.*.
> May 10 16:26:15 myhost dhcpcd[740]: eth0: soliciting an IPv6 router
> May 10 16:26:17 myhost dnsmasq-dhcp[1862]: DHCP packet received on eth0
> which has no address
> May 10 16:26:20 myhost dhcpcd[740]: eth0: using static address
> 192.168.6.1/24
> May 10 16:26:20 myhost avahi-daemon[384]: Joining mDNS multicast group on
> interface eth0.IPv4 with address 192.168.6.1.
> May 10 16:26:20 myhost avahi-daemon[384]: New relevant interface eth0.IPv4
> for mDNS.
> May 10 16:26:20 myhost avahi-daemon[384]: Registering new address record
> for 192.168.6.1 on eth0.IPv4.
> May 10 16:26:20 myhost dhcpcd[740]: eth0: adding route to 192.168.6.0/24
> May 10 16:26:28 myhost dhcpcd[740]: eth0: no IPv6 Routers available
> May 10 16:26:35 myhost dhcpcd[740]: eth0: carrier lost
> May 10 16:26:35 myhost kernel: [ 1681.494492] bcmgenet fd580000.ethernet
> eth0: Link is Down
> May 10 16:26:35 myhost dhcpcd[740]: eth0: deleting address
> fe80::XX:XX:XX:d2c
> May 10 16:26:35 myhost avahi-daemon[384]: Withdrawing address record for
> fe80::XX:XX:XX:d2c on eth0.
> May 10 16:26:35 myhost avahi-daemon[384]: Leaving mDNS multicast group on
> interface eth0.IPv6 with address fe80::XX:XX:XX:d2c.
> May 10 16:26:35 myhost avahi-daemon[384]: Interface eth0.IPv6 no longer
> relevant for mDNS.
> May 10 16:26:35 myhost avahi-daemon[384]: Withdrawing address record for
> 192.168.6.1 on eth0.
> May 10 16:26:35 myhost avahi-daemon[384]: Leaving mDNS multicast group on
> interface eth0.IPv4 with address 192.168.6.1.
> May 10 16:26:35 myhost avahi-daemon[384]: Interface eth0.IPv4 no longer
> relevant for mDNS.
> May 10 16:26:35 myhost dhcpcd[740]: eth0: deleting route to 192.168.6.0/24
> May 10 16:26:38 myhost dhcpcd[740]: eth0: carrier acquired
> May 10 16:26:38 myhost kernel: [ 1684.565026] bcmgenet fd580000.ethernet
> eth0: Link is Up - 100Mbps/Full - flow control off
> May 10 16:26:38 myhost dhcpcd[740]: eth0: IAID 01:79:77:90
> May 10 16:26:38 myhost dhcpcd[740]: eth0: adding address fe80::XX:XX:XX:d2c
> May 10 16:26:38 myhost dhcpcd[740]: eth0: probing address 192.168.6.1/24
> May 10 16:26:38 myhost avahi-daemon[384]: Joining mDNS multicast group on
> interface eth0.IPv6 with address fe80::XX:XX:XX:d2c.
> May 10 16:26:38 myhost avahi-daemon[384]: New relevant interface eth0.IPv6
> for mDNS.
> May 10 16:26:38 myhost avahi-daemon[384]: Registering new address record
> for fe80::XX:XX:XX:d2c on eth0.*.
> May 10 16:26:38 myhost dnsmasq-dhcp[1862]: DHCP packet received on eth0
> which has no address
> May 10 16:26:39 myhost dhcpcd[740]: eth0: soliciting an IPv6 router
> May 10 16:26:41 myhost dnsmasq-dhcp[1862]: DHCP packet received on eth0
> which has no address
> May 10 16:26:42 myhost dhcpcd[740]: eth0: using static address
> 192.168.6.1/24
> May 10 16:26:42 myhost dhcpcd[740]: eth0: adding route to 192.168.6.0/24
> May 10 16:26:42 myhost avahi-daemon[384]: Joining mDNS multicast group on
> interface eth0.IPv4 with address 192.168.6.1.
> May 10 16:26:42 myhost avahi-daemon[384]: New relevant interface eth0.IPv4
> for mDNS.
> May 10 16:26:42 myhost avahi-daemon[384]: Registering new address record
> for 192.168.6.1 on eth0.IPv4.
> May 10 16:26:52 myhost dhcpcd[740]: eth0: no IPv6 Routers available
>
But when I used isc-dhcp-server with following config:
subnet 192.168.6.0 netmask 255.255.255.0 {
> interface eth0;
> ddns-update-style none;
> default-lease-time 600;
> max-lease-time 3600;
> authorative;
> range 192.168.6.11 192.168.6.20;
> option subnet-mask 255.255.255.0;
> option routers 192.168.6.1;
> option domain-name-servers 8.8.8.8;
> get-lease-hostnames true;
> use-host-decl-names true;
>
}
>
then isc-dhcp-server assigns correct IP to RTMU86.
Why doesn't Dnsmasq want to assign IP to RTMU86?
Kind regards,
Kamil
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