From e374cef5181e97dbdf8f18b47cb9afd8d86cbf9a Mon Sep 17 00:00:00 2001
From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Wed, 3 Jul 2013 22:09:02 +0000
Subject: [PATCH] MFp4 @229480:

Shutdown write direction of the routing socket. We only need to read from it.

Reviewed by:	brooks
Sponsored by:	The FreeBSD Foundation
---
 sbin/dhclient/dhclient.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sbin/dhclient/dhclient.c b/sbin/dhclient/dhclient.c
index 038002058315..43e0c16de958 100644
--- a/sbin/dhclient/dhclient.c
+++ b/sbin/dhclient/dhclient.c
@@ -476,6 +476,8 @@ main(int argc, char *argv[])
 
 	if ((routefd = socket(PF_ROUTE, SOCK_RAW, 0)) != -1)
 		add_protocol("AF_ROUTE", routefd, routehandler, ifi);
+	if (shutdown(routefd, SHUT_WR) < 0)
+		error("can't shutdown route socket: %m");
 
 	/* set up the interface */
 	discover_interfaces(ifi);