From 2d468029e193f44742c48859aa5bcf383511b9c0 Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Mon, 3 Feb 2014 11:39:25 +0000
Subject: [PATCH] Only listen to the UDP port if we opened it.

---
 dhcp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dhcp.c b/dhcp.c
index f4a9a45d..2423301f 100644
--- a/dhcp.c
+++ b/dhcp.c
@@ -2610,7 +2610,8 @@ dhcp_open(struct interface *ifp)
 			syslog(LOG_ERR, "%s: dhcp_openudp: %m", ifp->name);
 			return -1;
 		}
-		eloop_event_add(state->udp_fd, dhcp_handleudp, ifp);
+		if (state->udp_fd != -1)
+			eloop_event_add(state->udp_fd, dhcp_handleudp, ifp);
 	}
 	return 0;
 }
-- 
2.47.3