“Object "netns" is unknown, try "ip help".\n'”报错

tail -f/var/log/neutron/dhcp-agent.log

By default, CentOS 6.4 does not support network namespaces. If one wants totest the new virtualization platforms (Docker, OpenStack, & co…) on aCentOS server, all features won’t be available.
For OpenStack for example, Neutron won’t work as expected, since it actuallyneeds network namespace to create networks,

Fortunately, RedH