Re: wireless network interfaces and network namespaces

[Johannes Berg <johannes@sipsolutions.net>]

On Sat, 2013-11-30 at 15:58 +0200, Kevin Wilson wrote:
> Thanks!
> Running:
> iw phy phy0 set netns 3433
> indeed moved wlan0 to the network namespace I created, where process 3433 ran.
> I did not see a way to specify the network namespace name for moving
> wlan0 in this command (at least iw help does not show it and  I am
> using iw 3.4-1 on ubuntu). I did not looked into the source code of iw
> though.

No, that's not supported since all virtual interfaces (e.g. wlan0)
belonging to a device (e.g. phy0) must move namespaces together.
Otherwise you could do

iw wlan0 interface add wlan0b type managed

and then try to move wlan0 while wlan0b stays in the namespace. In
theory that might actually be useful given appropriate resource
reservation and multi-interface/multi-channel capable devices, but it
would require a massive effort to get it right - it's not useful
enough ;)

johannes