From: Roy Marples <roy@marples.name>
Date: Thu, 18 Sep 2014 13:38:46 +0000 (+0000)
Subject: Check we have allocated IPv6 resources before checkings RA's.
X-Git-Tag: v6.4.5~2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fe6c1b9d5810794d96470b1b93fb86684c24d570;p=thirdparty%2Fdhcpcd.git

Check we have allocated IPv6 resources before checkings RA's.
Fixes [1e770ea479].
---

diff --git a/ipv6nd.c b/ipv6nd.c
index 1dcb24a6..794ef9dc 100644
--- a/ipv6nd.c
+++ b/ipv6nd.c
@@ -397,6 +397,9 @@ ipv6nd_addrexists(struct dhcpcd_ctx *ctx, const struct ipv6_addr *addr)
 	struct ra *rap;
 	struct ipv6_addr *ap;
 
+	if (ctx->ipv6 == NULL)
+		return 0;
+
 	TAILQ_FOREACH(rap, ctx->ipv6->ra_routers, next) {
 		TAILQ_FOREACH(ap, &rap->addrs, next) {
 			if (addr == NULL) {