Lxd "routed" interface config - problem w Ubuntu 20.04 Host and WiFi

LXD
6

@bmullan

The fix for this is to add on-link: true to the netplan config via cloud-init, e.g.

config:
  user.network-config: |
    version: 2
    ethernets:
        eth0:
            addresses:
            - 192.168.1.201/32
            nameservers:
                addresses:
                - 8.8.8.8
            routes:
            -   to: 0.0.0.0/0
                via: 169.254.0.1
                on-link: true
devices:
  eth0:
    ipv4.address: 192.168.1.201
    nictype: routed
    parent: enp3s0
    type: nic

Tested working in focal and bionic.