Comment 1 for bug 1579222

Tested my patches on mako, arale and krillin and was able to configure and use the Canonical VPN on all three devices.

Note, as arale has a much newer kernel than the others, it doesn't appear to exhibit the issue with the IPv4 address already existing, however this may also just be timing related. I still see errors with adding one of the IPv6 addresses ( ie. the EINVAL case ), and after installing from the silo ( 77 ), this error goes away.

Test version available in silo 77:

https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-077