From: Steven Barth <steven@midlink.org>
Date: Fri, 17 Jan 2014 13:04:36 +0000 (+0100)
Subject: Fix a segfault in state-script handling
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fodhcpd.git;a=commitdiff_plain;h=0a41d480c058b68fe09ac7de044c561dee955233;ds=sidebyside

Fix a segfault in state-script handling
---

diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c
index 2e93bd0..88840a4 100644
--- a/src/dhcpv6-ia.c
+++ b/src/dhcpv6-ia.c
@@ -211,7 +211,7 @@ void dhcpv6_write_statefile(void)
 			if (iface->dhcpv6 != RELAYD_SERVER && iface->dhcpv4 != RELAYD_SERVER)
 				continue;
 
-			if (iface->dhcpv6 == RELAYD_SERVER) {
+			if (iface->dhcpv6 == RELAYD_SERVER && iface->ia_assignments.next) {
 				struct dhcpv6_assignment *c;
 				list_for_each_entry(c, &iface->ia_assignments, head) {
 					if (c->clid_len == 0)
@@ -262,7 +262,7 @@ void dhcpv6_write_statefile(void)
 				}
 			}
 
-			if (iface->dhcpv4 == RELAYD_SERVER) {
+			if (iface->dhcpv4 == RELAYD_SERVER && iface->dhcpv4_assignments.next) {
 				struct dhcpv4_assignment *c;
 				list_for_each_entry(c, &iface->dhcpv4_assignments, head) {
 					char ipbuf[INET6_ADDRSTRLEN];