Only recognisies IPv6 addresses, not IPv6 resolving hostnames

[mhmeadows63]

@grongor
I suggest an adjustment something like:

-   self.host = args.host
-   self.is_ipv6 = args.host.find(':') != -1
+   self.addr = socket.getaddrinfo(args.host, 0)
+   self.is_ipv6 = self.addr[0][0] == socket.AF_INET6

-   s.connect_ex((self.host, port))
+   s.connect_ex((self.addr[0][4][0], port))

[grongor]

Yeah, of course :) It's kinda hard for me - I don't have any network to test the IPv6 on ... yep, lame, I know :D Can you take a look at #4 and see if it works for you? Thanks :)