Marcus, I think UFW is actually correct here... I have never seen a 4 bit mask before but it does break down along the lines it shows.
96.0.0.0 is the start of the /4 mask that contains 111.12.34.2 so by telling UFW you want to block 111.12.34.2/4 it interprets (Correctly) that you mean 96.0.0.0/4. Did you mean to type 111.12.34.2/24? That would result in UFW blocking: 111.12.34.0/24 BTW: Great work on GUFW! Thanks! -- List of rules not consistent with the rule added https://bugs.launchpad.net/bugs/237446 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs