Re: Is Fragmentation at IP layer even needed ?

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On Mon, Feb 8, 2016 at 4:06 PM Fernando Gont <fgont@xxxxxxxxxxxxxxx> wrote:
On 02/08/2016 08:20 PM, Phillip Hallam-Baker wrote:
> On Mon, Feb 8, 2016 at 5:39 PM, Carsten Bormann <cabo@xxxxxxx> wrote:
>> Ronald Bonica wrote:
>>> The words "many" and "some" don't do justice to the conversation.  https://tools.ietf.org/html/draft-ietf-v6ops-ipv6-ehs-in-real-world-02 provides more concrete numbers from real-world observation.
>>
>> Ah, but the result is much simpler.
>>
>> Some other real world data (Google QUIC experiments) already tell us
>> that a sizable part of the Internet (was it 7 %?) is not reachable via
>> UDP at all.  This just ups that number slightly for IPv6 and UDP
>> protocols that don't have their own segmentation.
>>
>> UDP, it was nice to have known you.
>
> Maybe what we needed all along was a better TCP that allowed data to
> be sent on the first packet.

FWIW, TCP does allow you to send data in the SYN.

https://tools.ietf.org/html/rfc7413 for those who are wondering. 
W
 
However, it's not
friendly with DoS mitigatons such as SYN-cookies.

Thanks!

Cheers,
--
Fernando Gont
SI6 Networks
e-mail: fgont@xxxxxxxxxxxxxxx
PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492





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