Hey,
I just committed code where I added a new constructor and now you can provide to IPAddress object directly to the port forwarded.
So prior to calling constructor you can create IPAddress object as IPv4 or IPv6 and that object will be used internally to connect.
Hope it helps resolve the issue of IPv6 and IPv4 in port forwarding.
I guess in the future I will extend this ability to use IPAddress instead of string everywhere in application where it makes sense.
Thanks,
Oleg