On 08.01.2026 15:20 Michael P. Soulier wrote: > The interface is screwing up autonegotiation and falling back to > 10mbits. It's a Gigabit interface. So I force it to Gigabit using > ethtool. You should then check the logs and also check the cabling etc. to verify it is not a hardware issue. The driver of one of the sides might also be faulty, which should be excluded.