Re: [PATCH net] ipv6: stop sending PTB packets for MTU < 1280

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From: Hagen Paul Pfeifer <hagen@xxxxxxxx>
Date: Thu, 15 Jan 2015 22:34:25 +0100

> Reduce the attack vector and stop generating IPv6 Fragment Header for
> paths with an MTU smaller than the minimum required IPv6 MTU
> size (1280 byte) - called atomic fragments.
> 
> See IETF I-D "Deprecating the Generation of IPv6 Atomic Fragments" [1]
> for more information and how this "feature" can be misused.
> 
> [1] https://tools.ietf.org/html/draft-ietf-6man-deprecate-atomfrag-generation-00
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Fernando Gont <fgont@xxxxxxxxxxxxxxx>
> Signed-off-by: Hagen Paul Pfeifer <hagen@xxxxxxxx>

Applied, thanks.

But any follow-ups to get rid of RTAX_FEATURE_ALLFRAG altogether are
not to be seriously considered in my opinion.
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