Comment 23 for bug 1034161

The solution discussed in https://bugzilla.redhat.com/show_bug.cgi?id=869004 only fixes the iproute2 part (adding netns support).

However, in order to make ip netns stuff work, kernel also need to support file descriptor of /proc/[pid]/ns/net . And this feature is merged to Linux upstream since 3.0 Not so sure whether it will be backported to RHEL 6.5 or not.