Thanks unSpawn way forward, but...
funny enough as this is a hybrid thing in opensuse, there is no service file for mediatomb:
# systemctl enable mediatomb.service
mediatomb.service is not a native service, redirecting to /sbin/chkconfig.
(and probably no ifplugd service file to refer to either, in runlevels i have "network" though it is named "ifplugd"in the journalctl:
Jun 03 19:15:09 ..systemd: Failed to start LSB: MediaTomb daemon.
Jun 03 19:15:09 .. systemd: Unit mediatomb.service entered failed state
Jun 03 19:15:09 .. kernel: tg3 0000:05:00.0 eth0: Link is up at 1000 Mbps, full duplex
Jun 03 19:15:09 .. kernel: tg3 0000:05:00.0 eth0: Flow control is on for TX and on for RX
Jun 03 19:15:09 .. kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Jun 03 19:15:10 .. ifplugd(eth0): Link beat detected.
Jun 03 19:15:10 .. avahi-daemon: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::224:e8ff:fe2d:b603.
Jun 03 19:15:10 .. avahi-daemon: New relevant interface eth0.IPv6 for mDNS.
Jun 03 19:15:10 .. avahi-daemon: Registering new address record for fe80::224:e8ff:fe2d:b603 on eth0.*.
Jun 03 19:15:11 .. ifplugd(eth0): Executing '/etc/ifplugd/ifplugd.action eth0 up'.
Unfortunately the blog entry you sent (isn't this guy the cause of our sleepless hours?) does not address any of these. He assumes you just know already....
Thanks edorig, but I am an amateur and not smart enough for Slackware, maybe Sabayon which I am running on my laptop - where knwoing a handfull of equo commands get you a very long way.
Please, any more details on how to create and presumably register this 2 service file(s) greatly appreciated.