Comment 7 for bug 2000325

root@ubuntu:/home/ubuntu# networkctl status eth2-2 --no-pager
● 2: eth2-2
             Link File: /run/systemd/network/10-netplan-eth2-2.link
          Network File: /run/systemd/network/10-netplan-eth2-2.network
                  Type: ether
                 State: carrier (failed)
                  Path: pci-0000:00:06.0
                Driver: virtio_net
                Vendor: Red Hat, Inc.
                 Model: Virtio network device
            HW Address: b8:38:61:bc:60:f6 (Cisco Systems, Inc)
                   MTU: 1500 (min: 68, max: 65535)
  Queue Length (Tx/Rx): 1/1
      Auto negotiation: no
                 Speed: n/a
     Activation Policy: up
   Required For Online: yes

Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Configuring route: dst: 6.1.6.254/32, src: n/a, gw: n/a, prefsrc: 6.1.6.1, scope: link, table: main, proto: static, type: unicast
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Configuring route: dst: n/a, src: n/a, gw: 6.1.6.254, prefsrc: n/a, scope: global, table: main, proto: static, type: unicast
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Configuring route: dst: n/a, src: n/a, gw: 2006:1:6::254, prefsrc: n/a, scope: global, table: main, proto: static, type: unicast
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Setting routes
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: State changed: pending -> configuring
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Forgetting route: dst: 2006:1:6::/116, src: n/a, gw: n/a, prefsrc: n/a, scope: global, table: main, proto: kernel, type: unicast
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Setting address genmode done.
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Could not set route: Invalid source address. Invalid argument
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: Failed
Dec 22 16:53:58 ubuntu systemd-networkd[552]: eth2-2: State changed: configuring -> failed