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authorume <ume@FreeBSD.org>2000-09-15 17:21:35 +0000
committerume <ume@FreeBSD.org>2000-09-15 17:21:35 +0000
commitd98e9631e37ec17749beb571397c592b3f413d4d (patch)
tree0dbe813fe7050357c63f0723149d5c55c49e5607 /sys/netinet6
parent8f94bca53c13ca83d19d640dd99c3ef803615c2d (diff)
downloadFreeBSD-src-d98e9631e37ec17749beb571397c592b3f413d4d.zip
FreeBSD-src-d98e9631e37ec17749beb571397c592b3f413d4d.tar.gz
examined the gateway (from the routing table) only when the address
family of the gateway is AF_INET6. Submitted by: JINMEI Tatuya <jinmei@isl.rdc.toshiba.co.jp>
Diffstat (limited to 'sys/netinet6')
-rw-r--r--sys/netinet6/icmp6.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/netinet6/icmp6.c b/sys/netinet6/icmp6.c
index b017bd8..a5f6326 100644
--- a/sys/netinet6/icmp6.c
+++ b/sys/netinet6/icmp6.c
@@ -2053,6 +2053,16 @@ icmp6_redirect_input(m, off)
bcopy(&reddst6, &sin6.sin6_addr, sizeof(reddst6));
rt = rtalloc1((struct sockaddr *)&sin6, 0, 0UL);
if (rt) {
+ if (rt->rt_gateway == NULL ||
+ rt->rt_gateway->sa_family != AF_INET6) {
+ log(LOG_ERR,
+ "ICMP6 redirect rejected; no route "
+ "with inet6 gateway found for redirect dst: %s\n",
+ icmp6_redirect_diag(&src6, &reddst6, &redtgt6));
+ RTFREE(rt);
+ goto freeit;
+ }
+
gw6 = &(((struct sockaddr_in6 *)rt->rt_gateway)->sin6_addr);
if (bcmp(&src6, gw6, sizeof(struct in6_addr)) != 0) {
log(LOG_ERR,
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