diff --git a/app/dns/nameserver_tcp.go b/app/dns/nameserver_tcp.go
index 14c716117..f3987afdd 100644
--- a/app/dns/nameserver_tcp.go
+++ b/app/dns/nameserver_tcp.go
@@ -82,7 +82,7 @@ func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
 			return nil, err
 		}
 	}
-	dest := net.TCPDestination(net.DomainAddress(url.Hostname()), port)
+	dest := net.TCPDestination(net.ParseAddress(url.Hostname()), port)
 
 	s := &TCPNameServer{
 		destination: dest,