On Mon, 4 Apr 2011, Ulli Horlacher wrote:
> My first Ubuntu 10.04 container is up and running on a Ubuntu 10.04 host,
> but the container can only connect to the host (and vice versa), but not
> to the world outside.
>
> I saw a lot of configurations for NAT, but I want native routing for my
> containers.
I know nothing about Ubuntu, but I got a similar setup working with
bridging. The host's IP is assigned to bridge br0 which has host's physical
network interface eth0 and guest's VETH interface gw1-eth0 as ports:
host# ip addr show br0
4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state
UNKNOWN
link/ether 00:19:99:5f:f2:87 brd ff:ff:ff:ff:ff:ff
inet 130.xxx.xxx.xxx/24 brd 130.xxx.xxx.255 scope global br0
valid_lft forever preferred_lft forever
host# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.0019995ff287 no eth0
gw1-eth0
No manual mutilation of routing tables is needed, only IP forwarding
allowed (net.ipv4.ip_forward = 1).
BR,
Antti Tanhuanpää
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