Figure out how to set up a network namespace without requiring iproute2

[radhermit]

Some native python lib like pyroute2 should probably get us most of the way there in terms of support for setting up loopback and virtual interfaces as well as providing basic routing/bridging back to the host.

[itdaniher]

pyroute2 has my vote, used its excellent netns module extensively. If I need this functionality, I'll take a stab at applying my knowledge here.

[itdaniher]

possibly relevant: https://github.com/larsks/python-netns