Re: [PATCH] netfilter: nf_conntrack_icmpv6: find conntrack related to ICMPv6 redirect packet

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On Wed, Jan 13, 2016 at 5:43 PM, Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> wrote:
> I'd suggest you submit this patch with a proper description.
>
> Thanks.

This patch will modify the conntrack state created by ICMPv6 redirect
packets from INVALID (as it is implemented now, skb->nfct remains
NULL) to RELATED (like in ICMPv6 errors case). In IPv4 case, ICMP
redirects are treated the same way as ICMP errors, so there is no
issue. Probably ICMPv6 redirects were not handled because their
parsing is not as straightforward as ICMPv6 errors.

I tested it on an older version of kernel, but since
nf_conntrack_proto_icmpv6.c remained basically the same, I think the
issue would be reproducible even on latest version of kernel.

Cheers,
Alin
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