From: Hans Dedecker <dedeckeh@gmail.com>
Date: Tue, 27 Mar 2018 18:49:40 +0000 (+0200)
Subject: ra: handle socket fail creation
X-Git-Url: http://git.openwrt.org/?p=project%2Fodhcp6c.git;a=commitdiff_plain;h=f0469e2ca395a01feffb8e21dbca821bd659f479

ra: handle socket fail creation

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
---

diff --git a/src/ra.c b/src/ra.c
index 299762e..397608a 100644
--- a/src/ra.c
+++ b/src/ra.c
@@ -301,11 +301,13 @@ bool ra_process(void)
 		socklen_t alen = sizeof(addr);
 		int sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
 
-		if (!connect(sock, (struct sockaddr*)&addr, sizeof(addr)) &&
-				!getsockname(sock, (struct sockaddr*)&addr, &alen))
-			lladdr = addr.sin6_addr;
+		if (sock >= 0) {
+			if (!connect(sock, (struct sockaddr*)&addr, sizeof(addr)) &&
+					!getsockname(sock, (struct sockaddr*)&addr, &alen))
+				lladdr = addr.sin6_addr;
 
-		close(sock);
+			close(sock);
+		}
 	}
 
 	while (true) {