Netplan config bridge - ubuntu-server-18.04, and ex. default lxd profile

50-cloud-init.yaml

# located at /etc/netplan/
# $ sudo netplan apply
network:
 version: 2
 renderer: networkd
 ethernets:
   enp5s0f0:
     dhcp4: false
 bridges:
   br0:
     interfaces: [enp5s0f0]
     dhcp4: false
     addresses: [192.168.1.4/24]
     gateway4: 192.168.1.1
     nameservers:
       addresses: [1.1.1.1,8.8.8.8]
     parameters:
       forward-delay: 0

default-lxd-profile.yaml

# lxd default profile to serve dhcp ip for containers
#keypoint "parent: br0"
# $ lxc profile edit default
config: {}
description: Default LXD profile
devices:
  eth0:
    name: eth0
    nictype: bridged
    parent: br0
    type: nic
  root:
    path: /
    pool: default
    type: disk
name: default
used_by:
- /1.0/containers/m1
- /1.0/containers/m2