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.
Signed-off-by: Andreas Herz <andi@xxxxxxxxxxxxxxx>
---
include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h | 2 ++
net/ipv6/netfilter/ip6t_REJECT.c | 6 ++++++
2 files changed, 8 insertions(+)
diff --git a/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h b/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h
index 205ed62..8bd5f4b 100644
--- a/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h
+++ b/include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h
@@ -9,6 +9,8 @@ enum ip6t_reject_with {
IP6T_ICMP6_NOT_NEIGHBOUR,
IP6T_ICMP6_ADDR_UNREACH,
IP6T_ICMP6_PORT_UNREACH,
+ IP6T_ICMP6_POLICY_FAIL,
+ IP6T_ICMP6_REJECT_ROUTE,
IP6T_ICMP6_ECHOREPLY,
IP6T_TCP_RESET
};
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 567367a..d39b647 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -57,6 +57,12 @@ reject_tg6(struct sk_buff *skb, const struct xt_action_param *par)
case IP6T_ICMP6_PORT_UNREACH:
nf_send_unreach6(net, skb, ICMPV6_PORT_UNREACH, 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;
case IP6T_ICMP6_ECHOREPLY:
/* Do nothing */
break;
--
2.4.6
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