[Dnsmasq-discuss] DNSMasq doesn't see DHCPv6 Solicit msg

[Shixiong Shang]

Hi,

I am using DNSMasq to assign IPv6 address to client machine (Centos 6.4).
Based on sniffer trace, I can see DHCP Solicit msg from client addressed to
ff02::1:2 at UDP port 547:

11:18:25.140542 IP6 (hlim 1, next-header UDP (17) payload length: 60)
fe80::f816:3eff:fe95:2389.546 > ff02::1:2.547: [udp sum ok] dhcp6 solicit
(xid=e14b62 (client-ID hwaddr/time type 1 time 428180465 fa163e952389)
(option-request DNS-server DNS-search-list) (elapsed-time 1652) (IA_NA
IAID:1049961353 T1:3600 T2:5400))


I changed the default configuration of dnsmasq and it is listening to port
547:

root     19991 19990  0 11:09 ?        00:00:00 dnsmasq --no-hosts
--no-resolv --strict-order --bind-interfaces --interface=ns-7f72b3ad-1a
--except-interface=lo
--pid-file=/var/lib/quantum/dhcp/81c3767a-d471-4433-8860-9a5ea20d4bd6/pid
--dhcp-hostsfile=/var/lib/quantum/dhcp/81c3767a-d471-4433-8860-9a5ea20d4bd6/host
--dhcp-optsfile=/var/lib/quantum/dhcp/81c3767a-d471-4433-8860-9a5ea20d4bd6/opts
--dhcp-script=/usr/bin/quantum-dhcp-agent-dnsmasq-lease-update
--leasefile-ro --enable-ra --port=547
--dhcp-range=set:tag0,2001:192:168:2::,slaac,120s
--dhcp-range=set:tag1,192.168.2.0,static,120s --conf-file=
--domain=openstacklocal


However, dnsmasq only saw IPv6 DHCP request from the VM, but not DHCPv6
Solicit msg. Is there anything I did wrong?

Jul 29 11:25:34 net-network1 dnsmasq-dhcp[19990]:
DHCPREQUEST(ns-7f72b3ad-1a) 192.168.2.3 fa:16:3e:95:23:89
Jul 29 11:25:34 net-network1 dnsmasq-dhcp[19990]: DHCPACK(ns-7f72b3ad-1a)
192.168.2.3 fa:16:3e:95:23:89 192-168-2-3
Jul 29 11:25:47 net-network1 dnsmasq-dhcp[19990]:
RTR-ADVERT(ns-7f72b3ad-1a) 2001:192:168:2::
Jul 29 11:25:47 net-network1 dnsmasq-dhcp[19990]:
RTR-ADVERT(ns-7f72b3ad-1a) 2001:192:168:2::
Jul 29 11:25:49 net-network1 dnsmasq-dhcp[19990]:
RTR-SOLICIT(ns-7f72b3ad-1a) fa:16:3e:95:23:89
Jul 29 11:25:49 net-network1 dnsmasq-dhcp[19990]:
RTR-ADVERT(ns-7f72b3ad-1a) 2001:192:168:2::
Jul 29 11:25:50 net-network1 dnsmasq-dhcp[19990]:
DHCPREQUEST(ns-7f72b3ad-1a) 192.168.2.3 fa:16:3e:95:23:89
Jul 29 11:25:50 net-network1 dnsmasq-dhcp[19990]: DHCPACK(ns-7f72b3ad-1a)
192.168.2.3 fa:16:3e:95:23:89 192-168-2-3
Jul 29 11:25:53 net-network1 dnsmasq-dhcp[19990]:
RTR-SOLICIT(ns-7f72b3ad-1a) fa:16:3e:95:23:89
Jul 29 11:25:53 net-network1 dnsmasq-dhcp[19990]:
RTR-ADVERT(ns-7f72b3ad-1a) 2001:192:168:2::
Jul 29 11:25:57 net-network1 dnsmasq-dhcp[19990]:
RTR-SOLICIT(ns-7f72b3ad-1a) fa:16:3e:95:23:89
Jul 29 11:25:57 net-network1 dnsmasq-dhcp[19990]:
RTR-ADVERT(ns-7f72b3ad-1a) 2001:192:168:2::


Thanks!

Shixiong
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