Hello Chris, thank you for your support.
The problem is identified by the firewall of a Fritzbox, that is not able to handle correct IPV6. After disabling IPV6 the problem disappears. This bug report can be closed. Happy new year karsten
Hello Chris, thank you for your support.
The problem is identified by the firewall of a Fritzbox, that is not able to handle correct IPV6. After disabling IPV6 the problem disappears. This bug report can be closed. Happy new year karsten