@myself I figured it out about a half hour later. If you're inside your own lan you only need your local lan IP. (Duh).
Best posts made by Tracy
RE: Attempted Self Hosting Seems to Pass all Tests except Player Joining
Thanks. Although it is curiouser and curiouser (to quote Lewis Carroll) why onezingy could get on but not others. He did text he downloaded the latest game engine if it matters.
You can close the this thread then.