Public bug reported: After upgrading from bionic to focal, the vtund fails to start in server mode and complains:
vtun[18171]: * Starting virtual tunnel daemon server vtun vtun[18176]: VTun ver 3.X 11/24/2021 vtun[18176]: Usage: vtun[18176]: Server: vtun[18176]: vtund <-i> [-f file] [-P port] [-L local address] vtun[18176]: Client: vtun[18176]: vtund [-f file] [-q] [-p] [-m] [-t timeout] <host profile> <server address> systemd[1]: vtun.service: Control process exited, code=exited, status=1/FAILURE Same behaviour observed on 22.04/jammy. At this time, vtun package is 3.0.4-2 on bionic and 3.0.4-2build1 on jammy. Man page seems out of date as well. Downgrading vtun on a focal system to the package from bionic (3.0.3-4build1) works around the problem. ** Affects: vtun (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2056698 Title: Server won't start after upgrade from 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vtun/+bug/2056698/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs