ANY valid rule I add -- there -- fails to be read / loaded ...
e.g., cat /etc/udev/rules.d/99-test.rules ACTION=="add|bind|change", SUBSYSTEM=="net", KERNEL=="enp5s0", RUN+="/bin/touch /etc/test-touch.txt" cat /proc/cmdline ... rd.udev.log_priority=debug rm -f /etc/test-touch.txt udevadm trigger ls -al /etc/test-touch.txt -rw-r--r-- 1 root root 0 Dec 22 07:06 /etc/test-touch.txt rm -f /etc/test-touch.txt reboot ls -al /etc/test-touch.txt (empty) journalctl -b | grep 99-test (empty) mv /etc/udev/rules.d/99-test.rules /usr/lib/udev/rules.d/ reboot ls -al /etc/test-touch.txt -rw-r--r-- 1 root root 0 Dec 22 07:27 /etc/test-touch.txt journalctl -b | grep 99-test (empty)