Comment 1 for bug 1512250

Looks like this is similar with https://bugs.launchpad.net/nova/+bug/1488537

Rushikesh have you setup l3 agent? From the http://docs.openstack.org/liberty/install-guide-ubuntu/neutron-controller-install-option1.html, it didn't mention about l3 agent. If you didn't setup l3 agent, just will be the case same with 1488537.