Can't resolve domain after vpn connection terminates

[Jochen Hein]

Jonas Hagen <jonas.hagen3 at gmail.com> writes:

> I can connect with openconnect to the VPN of our University without any
> problem. So, thank you!
>
> But after the connection is terminated (by Ctrl-C or suspend), I cannot
> reach the university network at all, even the public domains cannot be
> resolved anymore, and also subsequent connections via openconnect fail,
> because the vpn server address cannot be resolved.
>
> /etc/resolv.conf has a line "search unibe.ch home" even after
> openconnect terminates. If I delete this line manually, everything works
> again.
>
> How could I (help to) fix this?

What Distro do you run?  I've had a similar problem with Ubuntu
17.10. Solution was to remove the resolvconf package and use
systemd-resolve for DNS handling. Tho following ticket got me on the
track: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1714803

Jochen

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