Update: was not missing much. First off, Linode was having an IPv6 issue at this data center as I was testing so that would be a problem. They fixed it earlier so yay. Second, I was missing the SLAAC-assigned IPv6 address. Without it, the /56 is useless. Third, I was missing a couple of route rules that needed to be updated.. 2018. 7. 30. · Disable netplan.io and use native systemd-networkd on ubuntu 18.04. Posted on 30 July 2018 by Rene Diepstraten. Ubuntu’s first point release for Bionic Beaver (18.04 LTS) has been released. Now this release has had some time to mature, it’s time to have a look. ... (Of course I want IPv6 enabled).