Messages in this thread | | | Date | Mon, 2 Jul 2007 21:50:46 +0200 (CEST) | From | Krzysztof Oledzki <> | Subject | Re: mss to pmtu clamping partially broken? |
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On Mon, 2 Jul 2007, Phil Dibowitz wrote:
> On Mon, Jul 02, 2007 at 09:16:57PM +0200, Krzysztof Oledzki wrote: >> >> >> 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"? ;) > > There's already a counterpart for ECN blackholes, so I'm not opposed to it. > However, keeping up with new reports, re-testing existing offenders, etc. > takes up a good chunk of time, so I don't have the time to do it myself. I'm > happy to reference such a site, however.
Indeed and it seems there are more important issues, like similar window scaling problem for example. :(
Best regards,
Krzysztof Olędzki
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