From: Roy Marples <roy@marples.name>
Date: Wed, 18 Feb 2015 16:52:49 +0000 (+0000)
Subject: Check IPv6 state before regenerating random seeds. Fixes [eb1ef6a62b].
X-Git-Tag: v6.8.0~91
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f5aae717f702795c073ed54558cdab7d430389f;p=thirdparty%2Fdhcpcd.git

Check IPv6 state before regenerating random seeds. Fixes [eb1ef6a62b].
---

diff --git a/ipv6.c b/ipv6.c
index 8cf27b95..abc2d859 100644
--- a/ipv6.c
+++ b/ipv6.c
@@ -1371,7 +1371,9 @@ ipv6_gentempifid(struct interface *ifp)
 	uint8_t seed[16], digest[16];
 	int retry;
 
-	state = IPV6_STATE(ifp);
+	if ((state = IPV6_STATE(ifp)) == NULL)
+		return;
+
 	retry = 0;
 	if (memcmp(nullid, state->randomseed0, sizeof(nullid)) == 0) {
 		uint32_t r;