Hi Petr,
As per your recent logs i found for
GSS-API(maj): Miscellaneous failure
GSS-API(min): A2200202:Actual server name differs from requested one.
Now this error happens when
A2200202 Actual server name differs from requested one.
The name of the server's certificateused for authentication does not match the configured SNC name on the client.
Have a look SAP Note 1867829 - List of SNC Error Codes
So generate certificate for the actual server (distinguished name) on which you are running saprouter
Thanks,
Gaurav