From: Andreas Herz <andi@xxxxxxxxxxxxxxx>
RFC 4443 added two new codes values for ICMPv6 type 1:
5 - Source address failed ingress/egress policy
6 - Reject route to destination
And RFC 7084 states in L-14 that IPv6 Router MUST send ICMPv6 Destination
Unreachable with code 5 for packets forwarded to it that use an address
from a prefix that has been invalidated.
Codes 5 and 6 are more informative subsets of code 1.
Signed-off-by: Andreas Herz <andi@xxxxxxxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h | 4 +++-
net/ipv6/netfilter/ip6t_REJECT.c | 6 ++++++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h b/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h
index 205ed62..cd2e940 100644
--- a/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h
+++ b/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h
@@ -10,7 +10,9 @@ enum ip6t_reject_with {
IP6T_ICMP6_ADDR_UNREACH,
IP6T_ICMP6_PORT_UNREACH,
IP6T_ICMP6_ECHOREPLY,
- IP6T_TCP_RESET
+ IP6T_TCP_RESET,
+ IP6T_ICMP6_POLICY_FAIL,
+ IP6T_ICMP6_REJECT_ROUTE
};
struct ip6t_reject_info {
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 567367a..0ed841a 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -63,6 +63,12 @@ reject_tg6(struct sk_buff *skb, const struct xt_action_param *par)
case IP6T_TCP_RESET:
nf_send_reset6(net, skb, par->hooknum);
break;
+ case IP6T_ICMP6_POLICY_FAIL:
+ nf_send_unreach6(net, skb, ICMPV6_POLICY_FAIL, par->hooknum);
+ break;
+ case IP6T_ICMP6_REJECT_ROUTE:
+ nf_send_unreach6(net, skb, ICMPV6_REJECT_ROUTE, par->hooknum);
+ break;
}
return NF_DROP;
--
1.7.10.4
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