I get the same internal NAT'ed IP4 address every time, but my public IP4 address differs over time.
I don't like the idea at all of keeping an open ssh session going on without having my equipment on and me nearby. See, I'm a US citizen in a country that has these nasty FISA courts and a variety of new-ish unconstitutional laws that allow the President and others to plant fake content on my server, snatch me up, deny me a lawyer, detain me forever and kill me without cause. Did I forget to mention that all the ISPs I have used, including T-Mobile take my search requests sent to https, yes https://google.com and know what those search terms were? I guess I'm just a paranoid without cause?? Nevertheless, I do appreciate all advice and will look into it anyway. I like to learn things and never ignore anything people teach me. Even if I disagree at the time, I often wish I had been wise enough to follow previous advice. I really don't know crap about IP6 and need to catch up with the times. As always, sometimes I come across as sounding rude or discourteous without intending to, so if I have, I apologize. I thank several people on tech@ for pointing that out to me a good while back. Thanks, Chris Bennett

