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Hi All,

I have installed Grizzly with quantum and OVS-plugin. I'm using dnsmasq 
and never had any problems with it until now. Dnsmasq is working fine in 
most of the cases. But lately there were a few reports that dnsmasq is 
not working entirely reliable. Sometimes dnsmasq claims that no address 
is available for the specific mac-address, while other clients are still 
receiving their addresses fine.

Details:

Used dnsmasq version is 2.59. The issue was recognized on Ubuntu 12.04 LTS.

Logs:

Feb 12 11:10:31 Controller1 ovs-vsctl: 00001|vsctl|INFO|Called as 
/usr/bin/ovs-vsctl -- --may-exist add-port br-ex qg-f34f83e7-87 -- set 
Interface qg-f34f83e7-87 type=internal -- set Interface qg-f34f83e7-87 
external-ids:iface-id=f34f83e7-873f-47d4-8b4c-1d042c25e368 -- set 
Interface qg-f34f83e7-87 external-ids:iface-status=active -- set 
Interface qg-f34f83e7-87 external-ids:attached-mac=fa:16:3e:7a:bb:65
Feb 12 11:10:36 Controller1 dnsmasq-dhcp[14159]: 
DHCPDISCOVER(tapd788c180-85) fa:16:3e:3a:a3:d5 no address available
Feb 12 11:11:11  dnsmasq-dhcp[14159]: last message repeated 2 times
Feb 12 11:11:11 Controller1 ovs-vsctl: 00001|vsctl|INFO|Called as 
/usr/bin/ovs-vsctl -- --may-exist add-port br-ex qg-f34f83e7-87 -- set 
Interface qg-f34f83e7-87 type=internal -- set Interface qg-f34f83e7-87 
external-ids:iface-id=f34f83e7-873f-47d4-8b4c-1d042c25e368 -- set 
Interface qg-f34f83e7-87 external-ids:iface-status=active -- set 
Interface qg-f34f83e7-87 external-ids:attached-mac=fa:16:3e:7a:bb:65
Feb 12 11:11:12 Controller1 dnsmasq-dhcp[14159]: 
DHCPDISCOVER(tapd788c180-85) fa:16:3e:3a:a3:d5 no address available
Feb 12 11:11:51  dnsmasq-dhcp[14159]: last message repeated 2 times
Feb 12 11:11:51 Controller1 ovs-vsctl: 00001|vsctl|INFO|Called as 
/usr/bin/ovs-vsctl -- --may-exist add-port br-ex qg-f34f83e7-87 -- set 
Interface qg-f34f83e7-87 type=internal -- set Interface qg-f34f83e7-87 
external-ids:iface-id=f34f83e7-873f-47d4-8b4c-1d042c25e368 -- set 
Interface qg-f34f83e7-87 external-ids:iface-status=active -- set 
Interface qg-f34f83e7-87 external-ids:attached-mac=fa:16:3e:7a:bb:65

What could be the problem? Have you seen similar behavior? If yes, how 
did you fix this?

Regards,
Rajshree