File ntp-ENOBUFS.patch of Package ntp

--- ntp-4.2.8p6.orig/ntpd/ntp_io.c
+++ ntp-4.2.8p6/ntpd/ntp_io.c
@@ -4568,6 +4568,7 @@
 	struct rt_msghdr rtm;
 	char *p;
 #endif
+	static int netlink_warn = 1;
 
 	if (disable_dynamic_updates) {
 		/*
@@ -4582,14 +4583,15 @@
 	cnt = read(reader->fd, buffer, sizeof(buffer));
 
 	if (cnt < 0) {
-		if (errno == ENOBUFS) {
-			msyslog(LOG_ERR,
-				"routing socket reports: %m");
-		} else {
+		if (errno != ENOBUFS) {
 			msyslog(LOG_ERR,
 				"routing socket reports: %m - disabling");
 			remove_asyncio_reader(reader);
 			delete_asyncio_reader(reader);
+		} else if (netlink_warn == 1) {
+			msyslog(LOG_ERR,
+				"routing socket reports: %m");
+			netlink_warn = 0;
 		}
 		return;
 	}