IP6 port filtering does not work for UltraVNC

[dooku]

Hello,
In the past I had an IP4 modem, now my ISP only works with IP6 address pool.
I have UV installed and replaced with the IP6 executable, enabled IP6 in UV.

But whatever I try using IP6 port filtering (not port forwarding!) in the the modem firewall, it just does not work.
Using as connection ID: [ip6 address]:<port number> just does not work.
I changed the default port number to for example 1234 but during the connection attempt with IP6 I see a weird and much longer number as the port number for example like this: 3776244
But with default port 5900 it also does NOT work.

Also, I see these 3 IP6 addresses using Ipconfig /all:
IPv6 Address
Temporary IPv6 Address
Link-Local IPv6 Address

Which one do I need to use when trying to connect from the internet??

[Rudi De Vos]

Are you using the ipv6 version of UltraVNC