After a few investigation I found that my previous fix does not fix the bug at boot, at least on my Ubuntu 18.04 server.
There's no need to manually create the /run/dhcp-server folder since dhcpd automatically creates the needed PID file parent folders by itself. It only happens at boot so the bug shoud be somewhere else, maybe something in startup sequence/dependencies. With the original .service file, PID file /run/dhcp-server/dhcp.pid is not created (but server is running); manually restarting the service after boot will create the PID file correctly. I've workarounded the bug by hardcoding PID file names WITHOUT folder: /lib/systemd/system/isc-dhcp-server.service ==> "-pf /run/dhcp.pid" /lib/systemd/system/isc-dhcp-server6.service ==> "-pf /run/dhcp6.pid" and it works correctly after boot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1448657 Title: isc-dhcp-server: Can't create PID file /run/dhcp-server/dhcpd.pid: Permission denied To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1448657/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
