Hi,

On Fri, Jun 19, 2015 at 09:56:20AM +0200, Ole Troan wrote:
> >>>> Tell me this. Would you be happier if the fragmentation rule said that 
> >>>> the first fragment had to contain the entire IPv6 header, plus the 
> >>>> transport layer header (for ACL support)? I think Fernando would support 
> >>>> such a statement (I think I have "heard" him make such a statement).
> >>> 
> >>> It would certainly make *me* happier???$,1s&
> >> 
> >> done.
> >> RFC7112.
> > 
> > As I wrote in another mail,
> > 
> >> It may be relevant to ask for RFC 7112 support next time we're doing
> >> an equipment RFQ (in a few years).
> > ...
> >> But until RFC 7112 support is available, I believe we will
> >> see a significant amount of breakage for IPv6 extension headers - and
> >> header chains will be limited to significantly less than 1280 bytes.
> > 
> > And until such support is available, we have to deal with the current
> > mess. Which may imply more filtering than some people would like.
> 
> I don???t think that follows.

I would second the observation that this (subsequent action) actually happens.
Not least because many consider it a reasonable approach not to process and/or 
to drop something that induces complexity & insecurity and which at the same 
time is not needed by any service or application (read: all EHs except ESP and, 
maybe in some corner cases, AH+FH).


thanks

Enno




> 
> cheers,
> Ole



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Enno Rey

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