Finally found a work-around that also proves the failure to become configured is caused by that stupid ipv6ll address added to the DNS server list. But I did not find any way which integrates into netplan. I basically took /run/systemd/network/10-netplan-br0.network and copied it as /etc/systemd/network/05-br0.network.
Then added: "IPv6AcceptRA=no" to the [Network] section and rebooted. Now the DNS list only contains the one server I specify and the status ends up as "routable (configured)". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1697730 Title: Long boot time due to systemd-networkd-wait-online.service failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1697730/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
