HomeAssistant network MTU

I’m running HomeAssistant on a virtual PC, HAOS and all, but I’m using a tunnel that doesn’t have a 1500 bytes ethernet MTU. How to change the MTU?

An IPv6 MTU path discovery bug

While installing a new server last week, my (SSH / TCP) connection seemed to suffer from some sort of hanging; randomly. I tried to figure out what was going on and it didn’t take long to find…