How to specify host port when set as non-standard?

Interestingly enough, I could not find any forum tags for “netplay”.

I am unfortunately forced to host a netplay session on a port which must be inferior to 33000, so I can’t use the standard port. Changing it server side is no problem.

I am unable to understand how to specify that different-from-default port onto the client. There is just no “port” field, only the IP address one. If I try to specify the port in the format 80.80.12.12:XXXXX with the colon, then it does not work.

Thanks for any help,