diff -up ntp-4.2.6p3/configure.rtnetlink ntp-4.2.6p3/configure
--- ntp-4.2.6p3/configure.rtnetlink	2011-01-04 03:03:47.000000000 +0100
+++ ntp-4.2.6p3/configure	2011-01-05 17:39:29.342985208 +0100
@@ -25858,6 +25858,7 @@ else
 /* end confdefs.h.  */
 
 		#include <stddef.h>
+		#include <sys/socket.h>
 		#include <linux/rtnetlink.h>
 
 int
diff -up ntp-4.2.6p3/ntpd/ntp_io.c.rtnetlink ntp-4.2.6p3/ntpd/ntp_io.c
--- ntp-4.2.6p3/ntpd/ntp_io.c.rtnetlink	2011-01-05 16:03:19.328001089 +0100
+++ ntp-4.2.6p3/ntpd/ntp_io.c	2011-01-05 16:03:19.349001911 +0100
@@ -4549,10 +4549,7 @@ init_async_notifications()
 #ifdef HAVE_RTNETLINK
 	memset(&sa, 0, sizeof(sa));
 	sa.nl_family = PF_NETLINK;
-	sa.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR
-		       | RTMGRP_IPV6_IFADDR | RTMGRP_IPV4_ROUTE
-		       | RTMGRP_IPV4_MROUTE | RTMGRP_IPV6_ROUTE
-		       | RTMGRP_IPV6_MROUTE;
+	sa.nl_groups = RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR;
 	if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
 		msyslog(LOG_ERR,
 			"bind failed on routing socket (%m) - using polled interface update");