site.conf: add gw02 with ipv6+ipv4 explictly

This should circumvent v6-only operation on v6-capable resolvers
(which is a problem if v6 is not working).

site.conf

@@ -47,7 +47,7 @@
 				},
 				gw02 => {
 					key => 'e8fa9bf402fd33dd1ba804a97f2e46c704423ff49e9c55312845a7bfb93121ad',
-					remotes => ['"gw02.paderborn.freifunk.net" port 10000'],
+					remotes => ['ipv6 "gw02.paderborn.freifunk.net" port 10000', 'ipv4 "gw02.paderborn.freifunk.net" port 10000'],
 				},
 			},
 		},