Bug 1176224

Description of problem:

after fresh install of RDO on the box using https://github.com/AthabascaUniversity/openstack-ng things seem to be functional except for the networking: trying to assign external IP to an instance results in error in logs:

failed to set SO_REUSE{ADDR|PORT} on DHCP socket: Protocol not available

downgrading back to dnsmasq-2.48-13.el6.x86_64 and rebooting machine fixes the issue.

Version-Release number of selected component (if applicable):

dnsmasq-2.48-14.el6.x86_64

How reproducible:

I have been able to reproduce this two times - first time on existing setup, second on fresh install.

Steps to Reproduce:
1. either use https://github.com/AthabascaUniversity/openstack-ng or follow http://docs.openstack.org/icehouse/install-guide/install/yum/content/index.html
2. create private network/subnet
3. create public network/subnet
4. create router and configure networks
5. create floating IP
6. create instance
7. try to associate floating IP with instance

Actual results:

/var/log/neutron/dhcp-agent.log:2014-12-19 10:39:42.214 2938 TRACE neutron.agent.dhcp_agent Stderr: '\ndnsmasq: failed to set SO_REUSE{ADDR|PORT} on DHCP socket: Protocol not available\n'
/var/log/messages:Dec 19 10:39:42 foohost dnsmasq[7871]: failed to set SO_REUSE{ADDR|PORT} on DHCP socket: Protocol not available

and while nova list report IP as being assigned - it is not available to external connections.

Expected results:

ability to connect to floater IP

Additional info:

abovementioned playbook follows closely official OpenStack guide for install on RHEL.

redhat-release-server-6Server-6.6.0.2.el6.x86_64