I'm trying to set up a Rust server but getting this port issue (https://pastebin.com/38A6Ug3A) and I don't know how to fix it. 

Does anyone know why this is happening, and what I can do to fix it?

Thanks in advance :)

The main error in there means that you either have a server already running on thst port or your IP that you have set isn't able to be bound to the server. Make sure you aren't setting a public IP if behind a router, and that no servers are running in the background.  

That worked! Would I just use my public IP for other players connecting? Not having much luck figuring that part out.

Yes, other players would use your public IP or find it via the server list generally.

I was hoping it would just show up in the list, but I'm not seeing it yet. I think there's something missing port-setup-wise between my VM/PC and firewall

You'd need to open the port on your router and have that forwarded to your machine hosting the server.

Done, now my players are getting reconnect_error_no_address. Any idea why?

ringc95

Done, now my players are getting reconnect_error_no_address. Any idea why?

Where and how?

ringc95

Done, now my players are getting reconnect_error_no_address. Any idea why?

if you have this error it is that you did not use the menu to connect to the server.I also have this problem when I copy/paste the ip:port of the server in the console.