Comment 15 for bug 1718607

The match stanza workarounds should be written like this (here with eno1 interface):

network:
  ethernets:
    eno1:
      match:
        macaddress: <LINK_MAC_HERE>
      [..]
  bridges:
    br0:
      macaddress: <LINK_MAC_HERE>
      interfaces:
        - eno1
      [..]

<LINK_MAC_HERE> can be get with the following command, just after "link/ether": $ sudo ip link show eno1

After setting this, you need either to reboot, or doing the following commands:
$ sudo ip link set br0 down
$ sudo brctl delbr br0
$ netplan apply