Comment 8 for bug 1717471

Verification-done for xenial with nplan 0.29~16.04.1:

This was a regression in the development release that transpired in a new SRU that has not been migrated to the stable release. The bad version is 0.26; current state of nplan in xenial is 0.23~16.04.1 in -updates.

Verified that lxc list shows an IPv4 and IPv6 address when a container is set up to use netplan with 0.29~16.04.1.