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I setup LXC using:

lxc-create -t ubuntu -n lxcguest1

But I can't access any services running on it from my LAN, it appears to be NATed. How do I set it up so that I can access it (it probably needs to get it's dhcp address from my Linksys router)?

Thanks.

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Possible duplicate of askubuntu.com/questions/256304/… –  sebgymn Sep 18 '13 at 11:31

2 Answers 2

up vote 4 down vote accepted

I've just dealt with this issue myself. Basically you need to setup a bridge and bind your network card and container to it. Here is the article I followed:

http://bj0z.wordpress.com/2011/08/19/howto-build-a-base-lxc-container-in-ubuntu-11-04/

Sounds as if like me, you require the 'bridge' solution rather than the NAT solution. I also turned off the default LXC bridge setup (which is NAT'ed). To do this just edit the file: /etc/default/lxc and change USE_LXC_BRIDGE="TRUE" to USE_LXC_BRIDGE="FALSE" and reboot.

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My setup on Ubuntu 14.04.1 LTS (Trusty Tahr) hosts

/etc/network/interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
    address 0.0.0.0

auto br0
iface br0 inet dhcp
    bridge_ports eth0

(reboot after changes)

And on the container config files (/var/lib/lxc/containername/config) I set lxc.network.link = br0

With this the container will get public ip addresses from the dhcp server just like the host.

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