Look like the build process has missing `HAVE_WORKING_FORK` at the build stage. For me, the issue was fixed on by rebuild from the source (so the source is correct), probably original build process affects HAVE_WORKING_FORK Unfortunately, I have no idea, how to fix the package.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881522 Title: vtun not running on ubuntu 20.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vtun/+bug/1881522/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
