I found the cause for the Problem. It was the Interface File in Sys:Prefs/Env-Archive/Sys
I replaced it with the one from the 3.15 ISO.
These are the parameters set in the File:
eth0 Device=DEVS:Networks/sungem_eth.device Unit=0 DoOnline UseDHCP MTU=1498
I think the Problem is the MTU.

[ Editiert durch ThePlayer 06.11.2021 - 16:07 ]