add comment about passing protocol version to the getconnection method

so that it can decide what paramaters are to be used...

ntunnel.py

@@ -301,6 +301,9 @@ async def NoiseForwarder(mode, encrdrwrr, connvalid, priv_key, pub_key=None):
 	# and waits for the server to "connect" to the client w/ a
 	# connection, e.g. reverse tunnel out behind a nat to allow
 	# incoming connections.
+	#
+	# Add protocol version to getconnection when it gets bumped
+	#
 	protocol_version = 0
 
 	rdr, wrr = await encrdrwrr