netdev - Re: Fwd: RFC 7112 on Implications of Oversized IPv6 Header Chains

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Date:	Thu, 30 Jan 2014 12:00:07 -0300
From:	Fernando Gont <fernando@...t.com.ar>
To:	Ben Hutchings <ben@...adent.org.uk>
CC:	netdev <netdev@...r.kernel.org>
Subject: Re: Fwd: RFC 7112 on Implications of Oversized IPv6 Header Chains

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On 01/30/2014 10:56 AM, Ben Hutchings wrote:
> On Wed, 2014-01-29 at 16:25 -0300, Fernando Gont wrote:
>> Folks,
>> 
>> FYI. This one has important implications -- it allows stateless 
>> filtering in IPv6 (otherwise not really possible)
> [...]
> 
> Still not possible unless you can trust that all hosts behind the 
> firewall will correctly drop overlapping fragments.

All recent versions of popular OSes already do that.

Yes, there will be older ones around for a while -- but so many things
have and are being improved in the IPv6 area that, if you ran an old
OS, processing overlapping fragments should probably be the last thing
you should worry about.

Thanks,
- -- 
Fernando Gont
e-mail: fernando@...t.com.ar || fgont@...networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1



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