UltraVNC

actually I got it working now with:
- IPv6 client - seemed to miss to use the special one
- used a hostname instead of IPv6 number with port

I need to use IPv6 on client and server side, so I downloaded the special version, applied IPv6 option on server side.
If I hover over the tray icon it shows the correct addresses.

Whenever I try to connect over internet connection I get:
"Failed to get server address !" message, the other window ...