[systemd-devel] Systemd-nspawn -- Canot add interface to container

[James Lott]

Hello again!

I'm having another issue with private networking in systemd-nspawn. This one 
I'm not so certain is a bug, but probably some kind of mistake on my part. 
Base on my reading of the systemd-nspawn man page though, I can't figure out 
what the problem is. Basically, all I'm tring to do is remove an interface 
from the host namespace and provide it to the container. Details are included 
below (This is systemd 216-r3 in Arch Linux ARM).

[root at host01 ~]# systemd-nspawn --network-interface=wlan0 -M1 -bD 
/home/lanvpn/
Spawning container 1 on /home/lanvpn.
Press ^] three times within 1s to kill container.
Failed to move interface wlan0 to namespace: File exists

Thanks in advance for any help!