Comment 3 for bug 1630963

I updated the commit: https://anonscm.debian.org/cgit/autopkgtest/autopkgtest.git/commit/?id=7077f969e

This fully fixes user/password based VMs now. Can you please check current git (you can run it straight out of there, with /path/to/checkout/runner/autopkgtest) how it works for you?