This is a small writedown of you to use Internet over USB on your reMarkable in cases you can't use WiFi.
Requirements:
- A Linux PC (mac might work or do with some minor workarounds)
- Turn a blind eye to the crappy scripts below
Since the PC being connected to the reMarkable over USB connects them in the Network 10.11.99.0/24 which the reMarkable creates, we can use this subnet to route all other traffic of the device over it and essentially treat the PC like an ordinary router.