From 985cd44c2b46b1acf13257d9a8e583ff957da010 Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Wed, 1 May 2019 08:05:00 -0400
Subject: [PATCH] fix possible segfault after failed port alloc w/ iptables
 option

fixes #767

Change-Id: I8034849655f1c6e4e59cf341b0ff99066223fcbc
---
 daemon/iptables.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/daemon/iptables.c b/daemon/iptables.c
index 340098ca5..d38a37ffb 100644
--- a/daemon/iptables.c
+++ b/daemon/iptables.c
@@ -286,6 +286,9 @@ static int __iptables_add_rule(const socket_t *local_sock, const str *comment) {
 static int __iptables_del_rule(const socket_t *local_sock) {
 	const char *err;
 
+	if (!local_sock || !local_sock->family)
+		return 0;
+
 	switch (local_sock->family->af) {
 		case AF_INET:
 			err = ip4tables_del_rule(local_sock);