Messages in this thread |  | | Date | Sat, 2 Sep 2000 16:34:06 +0200 | From | "Andi Kleen" <> |
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On Sat, Sep 02, 2000 at 04:12:04PM +0200, Elmer Joandi wrote: > Alan Cox wrote: > > > > There are a -lot- of large sites that give us issues like this. > > > > So mail lots of people. Cisco are I think now aware that their firewall > > products dont handle ECN correctly but others might not be. > > > > Or wait until more vendors roll out ECN > > There is another big problem like that... > tunnels actually do not work on todays real internet... > MTU 1500 is so much a standard that it starts killing tunnels. > MTU < 1500 is not a working solution today thanks to (mostly > linux based ? ) broken firewalls
I don't think they're mostly linux based. You can easily do that misconfiguration with most firewalls (i've often see it with Checkpoint for example)
Usually you can have a reasonable workaround by using a smaller MSS (at least until non TCP pmtudisc isn't more widely deployed)
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