I've just pushed out a fix for this in Debian unstable. Version 2.6.10-10 should work for you on Ubuntu 20.04:
https://packages.debian.org/unstable/fwknop-apparmor-profile ** Also affects: fwknop (Debian) Importance: Undecided Status: New ** No longer affects: fwknop (Debian) ** Changed in: fwknop (Ubuntu) Status: New => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880009 Title: fwknop service unable to start due to apparmor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fwknop/+bug/1880009/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs