Disable IPv6 one again

src/TJAlienDNSResolver.cxx

@@ -62,7 +62,7 @@ vector<string> TJAlienDNSResolver::get_addr(const char *host, const char *port,
 void TJAlienDNSResolver::reset() {
     addr_ipv4 = get_addr(host.c_str(), port.c_str(), 4);
     addr_ipv6 = get_addr(host.c_str(), port.c_str(), 6);
-    use_ipv6 = true;
+    use_ipv6 = false;
     current_position = 0;
 }