LXC container share host network

Goal

You want to share the host network with all your lxc containers.

Check network settings of your containers by typing:

lxc network list

If it displays something like that:

+---------+----------+---------+-------------+---------+
|  NAME   |   TYPE   | MANAGED | DESCRIPTION | USED BY |
+---------+----------+---------+-------------+---------+
| docker0 | bridge   | NO      |             | 0       |
+---------+----------+---------+-------------+---------+
| eth0    | physical | NO      |             | 0       |
+---------+----------+---------+-------------+---------+

Solution

Set up your container with the default settings of LXD, creating a network for all containers attached to the newly created lxdbr0 adapter on the host system with

lxd init

and accept the defaults:

Would you like to create a new local network bridge? (yes/no) [default=yes]:
What should the new bridge be called? [default=lxdbr0]:                                                             

and have your containers already connected to the lxdbr0 bridge on your host. You might now see something like this.

+---------+----------+---------+-------------+---------+
|  NAME   |   TYPE   | MANAGED | DESCRIPTION | USED BY |
+---------+----------+---------+-------------+---------+
| docker0 | bridge   | NO      |             | 0       |
+---------+----------+---------+-------------+---------+
| eth0    | physical | NO      |             | 0       |
+---------+----------+---------+-------------+---------+
| lxdbr0  | bridge   | YES     |             | 5       |
+---------+----------+---------+-------------+---------+

Now try it

lxc exec [mycontainer] /bin/bash                                               

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