centos7 openstack network namespace

I created instance in centos7 openstack, associated floating ip to instance but cannot ping and ssh to it. Finally found out I have to give network name space to it, more detail about network namespace here. network namespce [vagrant@ctopenstack ~(keystone_demo)]$ ip netns list qrouter-6d768792-a449-40dd-b124-c2daba753cfd qdhcp-9200eb14-5004-4e94-a7e0-1a62f32e96a4 ping instance [vagrant@ctopenstack ~(keystone_demo)]$ sudo …