On Sun, Sep 02, 2001 at 12:56:18AM +0200, Tomas Pospisek wrote: > > Zitiere Eduard Bloch <[EMAIL PROTECTED]>: > > > Neil Spring wrote on Sat Sep 01, 2001 um 12:34:40PM: > > > > > being turned off behind my back. ECN doesn't need any > > > more inertia slowing its deployment. It's already an > > > experimental, off by default, addition to the kernel. > > > > Why do many people think that it is OFF by default? > > The fact is, it is ON (see kernel docs) and it breaks with many sites. > > We could live long without this experimental feature, so why _force_ > > the users to use the feature now and make a stable distribution with > > limited networking ability? > > Incidentaly I'd today filled a *critical* bugreport against > kernel-image-2.4.8 just because of that. > > It's not only *sites* that do not work with ECN. It's also *routers*. That > means if you have *one* router between you and your destination, that does not > support ECN, then you'll get *very* strange behaveour like hanging TCP > connections that somehow get halfway through but do hang never the less while > ping works. Please check my bugreport #110862. And amongst the broken > equipment > are f.ex. (older?) Zyxel ISDN routers which are *very* popular.
FYI, Zyxel 681 SDSL-Router breaks ECN by stripping 0x80 (ECN Cwnd Reduced) but not 0x40 (ECN Echo) (TOS bits) on all SYN packets. This is the last official firmware. A beta firmware is available internally which fixes this issue: (ZyXEL firmware v2.50(T.05)b6 | 03/28/2001) -- Eric VAN BUGGENHAUT "Oh My God! They killed init! You Bastards!" --from a /. post \_|_/ Andago \/ \/ Av. Santa Engracia, 54 a n d a g o |-- E-28010 Madrid - tfno:+34(91)2041100 /\___/\ http://www.andago.com / | \ "Innovando en Internet" [EMAIL PROTECTED]