Quote from: hedders on August 23, 2025, 07:07:24 AMDaft as it may sound, have you tried a different network cable? Autonegotiation failures or inability to negotiate at 1000Mbps can often be associated with a cable going bad. The upgrade to 25.7.2 may just be a coincidence.
It only takes a break (or a stuck pin, or some dirt) in pins 4, 5, 7 or 8 and the connection willl never go above 100Mbps.
Changing the cable would always be my first check. A quick look in the two sockets with a torch would be my next quick check!