Thank your for Trävelling with Deutsche Bahn

I’m traveling with Deutsche Bahn again, and it’s frustrating again. I decided: Enough is enough. Yesterday’s journey went off the rails before it even began. Instead of just quietly fuming, I decided to write about it. And not just this one. Instead, I decided to write one post about every train trip I take. And not just the bad ones! The good ones as well. It’s just that the bad ones generally motivate me to write more readily. ...

February 13, 2026 · 14 min · Michael

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. E.g. SSH connections work, but then when I enter tmux for example, everything stops. No clear error message at all. ...

September 29, 2022 · 2 min · Michael