Thanks Guus for the suggestion about netplug as alternative. Network interface's configurtaion (IP) is already done when hotplugging the cable. What is not working on same event is the run-parts of scripts in /etc/network/if-up.d (as non-Systemd Debian versions did) and maybe other directories as:
/etc/network/if-down.d /etc/network/if-pre-up.d /etc/network/if-post-down.d This bad behavior happens when no Desktop/NetworkManager is in effect, and since Debian 9 is beyond 5 minutes after boot. I've tried to set TimeoutStartSec=infinity with no success at /lib/systemd/system/ifup@.service __________ I'm using this express-made address because personal addresses aren't masked enough at this mail public archive. Public archive administrator should fix this against automated addresses collectors.
