Re: [PATCH v2] netfilter: Parse ICMPv6 redirects

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Hi Alin,

On Tue, Mar 07, 2017 at 11:00:43AM +0100, Alin Nastac wrote:
> Extract IPv6 packet that triggered the sending of redirect message from
> ICMPv6 Redirected Header option and check if conntrack table contain such
> connection. Mark redirect packet as RELATED if a matching connection is found.

I think we need a sysctl to enable this on demand, eg.
'nf_conntrack_icmpv6_accept_redirects'

This is changing the default behaviour, my main concern here is that
filtering policies not accepting redirects will now make it via
RELATED.

I would prefer the user explicitly requests this.

Let me know, thanks!
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