add get public v6

Utils.py

@@ -190,6 +190,17 @@ def get_public_ipv4() -> str:
             pass  # we could be offline, in a local game, so no point in erroring out
     return ip
 
+def get_public_ipv6() -> str:
+    import socket
+    import urllib.request
+    import logging
+    ip = socket.gethostbyname(socket.gethostname())
+    try:
+        ip = urllib.request.urlopen('https://v6.ident.me').read().decode('utf8').strip()
+    except Exception as e:
+        logging.exception(e)
+        pass  # we could be offline, in a local game, so no point in erroring out
+    return ip
 
 def get_options() -> dict:
     if not hasattr(get_options, "options"):