[lxc-users] sticky ethernet device order in container

[Janjaap Bos]

When using multiple nics in the container, the order sometimes changes
after a restart.
So eth0 becomes eth1, vice versa.

when using LXD, how is this order determined?
There is no entry for eth0 in the config, since that is a standard lxc
network device.
Only the additional network device is added in the container config:
e.g.

name: c1
profiles:
- default
config:
  raw.lxc: |
    lxc.mount.entry = /var/lib/lxd/lxc/c1/devices/net/tun dev/net/tun none
bind,create=file 0 0
    lxc.mount.entry = /var/lib/lxd/lxc/c1devices/kvm dev/kvm none
bind,create=file 0 0
    lxc.mount.entry = /var/lib/lxd/lxc/c1/devices/fuse dev/fuse none
bind,create=file 0 0
  volatile.baseImage:
a4066a730e6b3d8021dcc7d0c59f2c37624ffdb60d10f1e09c336e4e1631915c
  volatile.eth0.hwaddr: 00:16:3e:33:3c:c2
  volatile.br0.hwaddr: 00:16:3e:5b:4f:19
devices:
  br0:
    parent: br0
    type: nic
ephemeral: false


Both nics have a volatile entry (done by lxc or lxd ?)

Sometime after a restart the nics have switched order in the container.
This of course messes up the network config in the container.

How can I make the eth0 and eth1 order stick?

Thanks for your help!

-Janjaap
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