[NETFILTER]: Use HOPLIMIT metric as TTL of TCP reset sent by REJECT
HOPLIMIT metric is appropriate to TCP reset sent by REJECT target
than hard-coded max TTL. Thanks to David S. Miller for hint.
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/netfilter/ipt_REJECT.c b/net/ipv4/netfilter/ipt_REJECT.c
index f057025..6693526 100644
--- a/net/ipv4/netfilter/ipt_REJECT.c
+++ b/net/ipv4/netfilter/ipt_REJECT.c
@@ -203,7 +203,7 @@
sizeof(struct tcphdr), 0));
/* Adjust IP TTL, DF */
- nskb->nh.iph->ttl = MAXTTL;
+ nskb->nh.iph->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
/* Set DF, id = 0 */
nskb->nh.iph->frag_off = htons(IP_DF);
nskb->nh.iph->id = 0;
