There is another conversation in v6ops that mentioned that switching
ASICs do not inspect beyond 40 bytes.
-as
On 6/9/13 10:46 AM, Fernando Gont wrote:
> Ray,
>
> On 06/08/2013 01:06 PM, Ray Hunter wrote:
>> I was thinking something along the lines of:
>>
>> - The preferred length of a Hop by Hop extension header for optimized
>> forwarding in hardware is always 16 octets long.
>>
>> - the Hop by Hop EH may be present exactly once, or not present, and is
>> always transmitted directly after the IPv6 header (already the case in 2460)
>
> I'd say one should enforce a "each EH can be present at most once".
>
> ANd, me, I'd limit the EH chain to 1280 octets (at most) -- even that is
> kind of irrational: 1280 is the IPv6 minimum MTU... so we'd be allowing
> packets that are 100& overhead.
>
> Cheers,
>
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