@mm - that probably isn't the issue, but you can adjust /etc/apparmor.d/local/usr.sbin.dhcpd to have:
@{PROC}/sys/net/ipv4/ip_local_port_range r, and then do: sudo apparmor_parser -r /etc/apparmor.d/usr.sbin.dhcpd # yes, without local/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872106 Title: isc-dhcp-server crashing constantly [Ubuntu 20.04] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1872106/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs