[inChargeOfIT]

little known fact: you can write shorthand for any ip address. It simply omits 0. Ie 127.0.0.1 (or 127.000.000.001). Try pinging it. `ping 127.1`

10.0.0.3 -> ping 10.3

[BenjiWiebe]

And the shortest IP to ping, for a quick connectivity check: 1.1 (1.0.0.1 is cloudflare dns alternate address)