diff -up ntp-4.2.6p5/libntp/decodenetnum.c.noservres ntp-4.2.6p5/libntp/decodenetnum.c

--- ntp-4.2.6p5/libntp/decodenetnum.c.noservres	2011-08-04 06:13:43.000000000 +0200

+++ ntp-4.2.6p5/libntp/decodenetnum.c	2013-03-28 18:38:49.239727130 +0100

@@ -70,7 +70,7 @@ decodenetnum(

 	}

 	ZERO(hints);

 	hints.ai_flags = Z_AI_NUMERICHOST;

-	err = getaddrinfo(cp, "ntp", &hints, &ai;;

+	err = getaddrinfo(cp, NULL, &hints, &ai;;

 	if (err != 0)

 		return 0;

 	NTP_INSIST(ai->ai_addrlen <= sizeof(*netnum));