NetworkManager & tun/br enigma

[Johannes Graumann <johannes_graumann@web.de>]

Hello,

I'm trying to get a NetworkManager-independent bridg up and running to be 
able to have my firewall manage traffic to/from lxc containers.

My '/etc/network/interfaces' looks like this:
> auto lo
> iface lo inet loopback
>  
> # tun/tap/bridge combo for lxc container networking
> auto tun0
> iface tun0 inet manual
>   tunctl_user           root
>   up                    ip link set tun0 up
>   down                  ip link set tun0 down
> auto br0
> iface br0 inet static
>   bridge_ports          tun0
>   bridge_maxwait        0
>   bridge_stp            off
>   address               172.16.0.1
>   netmask               255.255.255.0
>   dns-search            virt.local

No matter what I do to the 
> [ifupdown]
> managed=true/false
parameter in '/etc/NetworkManager/NetworkManager.conf', 'ifconfig' doesn't 
show me the tun0/br0 interfaces.

When I manually call 'service networking re/start', the process gets stuck 
unresponsively. 'CTRL-C'ing out 'ifconfig' now shows the tun/br interfaces.
'tail /var/log/messages' reports:
> IPv6: ADDRCONF(NETDEV_UP): tun0: link is not ready

Any hints on what may be wrong and how to proceed?

Sincerely, Joh