Lxd network config

Objective: Configure a bridged network allowing containers access to the LAN.

Install netplan.io, systemd-resolved, incus and bridge-utils

apt-get install netplan.io systemd-resolved incus incus-extra bridge-utils

Configure a network external to lxd/incus using bridge-utils and the following netplan config:

network:
  ethernets:
    eno1:
      addresses:
      - 192.168.0.31/17
      gateway4: 192.168.0.1
      nameservers:
        addresses:
        - 192.168.0.1
        search:
        - attlocal.net
    eno2:
      dhcp4: yes
      dhcp6: no
  bridges:
    br0:
      interfaces: [eno2]
      parameters:
        stp: true
        forward-delay: 4
      dhcp4: yes
      dhcp6: no
  renderer: networkd
  version: 2

Configure network br0 internal to lxd (you may not be able to change anything).

lxc network show br0
name: br0
    description: ""
    type: bridge
    managed: false
    status: ""
    config: {}
used_by:

Edit the default profile to match below.

lxc profile show default
name: default
description: Default LXD profile
config:
  security.secureboot: "false"
devices:
  eth0:
    name: eth0
    nictype: bridged
    parent: br0
    type: nic
  root:
    path: /
    pool: default
    type: disk
used_by: