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Description of problem:
dnsmasq stops responding to dhcp requests from instance after few days.
Restarting neutron and its dhcp agent has no affect.
Although killing dnsmasq procs and restarting neutron services solves the issue.

Version-Release number of selected component (if applicable):
dnsmasq-2.66-12.el7.x86_64
openstack-neutron-2014.1.3-7.el7ost.noarch
openstack-neutron-openvswitch-2014.1.3-7.el7ost.noarch
openstack-neutron-ml2-2014.1.3-7.el7ost.noarch


How reproducible:
No . But recurring on customer environment .

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
dhcp lease information for that instance port (mac address) is seen  in
var/lib/neutron/dhcp/<network-id>/host

Attached core file of dnsmasq when issue is noticed & after restart .

Created attachment 977852 [details]
Core with issue

Created attachment 977854 [details]
Core after issue is fixed by restart