Following instructions I've installed docker on ubuntu 13.04 (and 12.04 + 3.8 kernel), pulled the base container and started a shell inside it. It got a private IP and can ping it's default gateway but can't connect to any host outside, so no apt-get for me.
I have "net.ipv4.conf.all.forwarding = 1" in my sysctl and have POSTROUTING rules in iptables/nat table.
Did the docker installer forgot to add some rules or i'm missing something?