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From "Jeroen Massar" <jer...@unfix.org>
Subject RE: Linux + TCP_CORK + IPv6 = Broken [PATCH]
Date Thu, 05 Dec 2002 13:38:22 GMT
Colm MacCárthaigh [mailto:colmmacc@Redbrick.DCU.IE] wrote:

> On Thu, Dec 05, 2002 at 12:58:48PM +0000, Colm MacCárthaigh wrote:
> > I'm using vanilla 2.4.18, from Debian kernel-source-2.4.18 
> , one machine
> > has the broadcom bcm5700 module, and the the other has the intel
> > e1000 module. 
> O.k., more testing, I've tried it out on another box, which has
> a 3com network card and IDE disks, and it *doesnt* happen there.
> Things the vulnerable machines have in common:
>  SCSI hard-disks
>  Software RAID 1 set-up
>  GigE cards (bcm5700 , e1000)
>  Dell (2650, and 1650)
> Things unaffected machine has:
>  IDE disks
>  no RAID
>  3c905 network card.

I just recompiled the debian's 2.0.43 with --without-sendfile (push it
in the args list of debian/rules) and now www.sixxs.net works fully on
IPv4/IPv6 and IPv4-SSL and IPv6-SSL.

As for the hardware in that box, Linux 2.4.18, Celeron, IDE, ext3 fs's
and a:

eth0: RealTek RTL8139 Fast Ethernet at 0xd0800000, 00:10:dc:20:7c:7c,
IRQ 11
eth0:  Identified 8139 chip type 'RTL-8139B'

purgatory.unfix.org has 2.4.18, p100, IDE, ext3 and a Intel and DEC, but
IPv6 is tunneled and doesn't have that problem.
games.concepts.nl box has 2.4.19-pre5-ac3, Athlon, SCSI, ext3 and a
3c905C, this one doesn't have any problems.

I'll be running that first box with --without-sendfile :)

If you need extra informations don't mind to speak up.


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