Comment 7 for bug 1624495

What's interesting about this case is that the Xenial VMs are actually showing multiple IPV6 addresses when I do a show all addresses in vCenter. The list contains a loopback address: fe80::1.

Trusty only shows one IPV4 and IPV6 addresses and juju always selects the IPV4 address.

For Xenial VMs, it's the loopback address that's being selected for each VM. So this may be different or a side effect that's not yet unaccounted for.