Internet in the German ICE train: WireGuard MTU problem

I’m currently on my way home for a family visit and a weekend with friends. I’m sitting in the first class carriage of an Deutsche Bahn ICE train. Internet is working as expected while surfing. A little bit slow, and I’m getting timeouts from time to time. But it’s workable. The problem started after I enabled my WireGuard VPN to connect to my Homelab. Initially, it works okay, but then everything just stops....

September 29, 2022 · 2 min · Michael