I used to be able to connect remotely with my iPad running SDR Control to my 7300 in my shack running Wfview on my mac mini. Wfview acts as a server for SDR Control.
Recently, ATT changed us from DSL to Fiber and we got a new router. I have assigned the Wfview software access to ports 50001-50003. Access on the LAN from the iPad to Wfview on my mac mini is working fine, however, WAN access is not.
In the past, I had an IPV6 WAN address that was similar to the IPv4 LAN address but with different numbers. Now on “FindmyIP” my IPv6 WAN address is a series of 4 digit characters separated by a :.
I am certain that if I can find a WAN IPv6 in “standard” format, that my iPad can cnnect to Wfview running on my mac mini.
wfview specifically connects to an IPv4 address (I know because I wrote the code that does it). If your provider/router doesn’t give you an external IPv4 address, it may not be possible to connect remotely with wfview at this time.
The IPv6 format that @roeland provided is the only format that IPv6 addresses can take, so not sure what you have seen in the past?