@Kollskegg
the udev link files support general globbing (i had to look up what that mean)
this means yuou just make the devpath match parameter and specificy as much or as little as needed to match
see here
https://www.man7.org/linux/man-pages/man7/udev.7.html it shows all the UDEV parameters that can be matched on in the 'keys' section of the doc, globbing means you can write expressions if needed (but if its like the person you quoted you should just need
DEVPATH=/devices/pci0000:00/0000:00:1c.4/0000:07:00.0/0000:08:00.0/0000:09:00.0/domain0/0-0/0-3/0-1.0
DEVPATH=/devices/pci0000:00/0000:00:1c.4/0000:07:00.0/0000:08:00.0/0000:09:00.0/domain0/0-0/0-3/0-3.0
or to be more precise you need the devpath from the two different sections that mention thunderbolt-net
Code:
P: /devices/pci0000:00/0000:00:1c.4/0000:07:00.0/0000:08:00.0/0000:09:00.0/domain0/0-0/0-3/0-3.0
M: 0-3.0
R: 0
U: thunderbolt
T: thunderbolt_service
V: thunderbolt-net
E: DEVPATH=/devices/pci0000:00/0000:00:1c.4/0000:07:00.0/0000:08:00.0/0000:09:00.0/domain0/0-0/0-3/0-3.0
E: SUBSYSTEM=thunderbolt
E: DEVTYPE=thunderbolt_service
E: DRIVER=thunderbolt-net
E: MODALIAS=tbsvc:knetworkp00000001v00000001r00000001