I have a LX container on Ubuntu 13.04 which has worked flawless for the last 161 days. I restarted the host and started all the LXC's and I'm allowed to connect to the LXC containers from the outside. But I can't establish connections from inside a LXC and out.
Trying to ping Google.com or any other site doesn't work. apt-get won't fetch anything.
I have no idea as to what have changed and I have no idea where to look.
Host works just fine with ingoing and outgoing network traffic.
The LXC config is standard from Ubuntus apt-get installation.