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SubjectRe: mss to pmtu clamping partially broken?


On Mon, 2 Jul 2007, Phil Dibowitz wrote:

> On Mon, Jul 02, 2007 at 07:04:12PM +0200, Andreas Steinmetz wrote:
>> Jan Engelhardt wrote:
>>> Do you really need clamping? It's a hack, since TCP should do MSS negotiation
>>> itself. (Of course it may happen that some routers are broken.) But usually not
>>> for incoming packets.
>>
>> You never know when you hit ICMP blackholes, broken routers and other
>> evil things. Better safe than sorry so clamping is the way to go for me.
>
> I encourage you to report PMTUD Blackholes to the MSS Initiative at
> http://www.phildev.net/mss/

Any chances for similar initiative for "SACK vandals"? ;)

Best regards,

Krzysztof Olędzki
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