--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: linux-image-2.6.17-1-686: TCP bug introduced in 2.6.17
- From: Romain Lenglet <rlenglet@users.forge.objectweb.org>
- Date: Thu, 03 Aug 2006 17:31:26 +0900
- Message-id: <20060803083126.30753.14528.reportbug@localhost.localdomain>
Package: linux-image-2.6.17-1-686
Version: 2.6.17-4
Severity: important
It is impossible to access the following URL using kernel 2.6.17:
http://icfp06.cs.uchicago.edu/
No data seems to be received, when running Debian's kernel 2.6.17, using any web brower (Konqueror, Firefox...), or even using telnet:
telnet icfp06.cs.uchicago.edu 80
GET / HTTP/1.1
host: icfp06.cs.uchicago.edu
This problem occurs always and only with that web site (I have found no other site that triggers that problem), and only when using kernel 2.6.17.
It must be noted that this problem disappears when running a previous kernel version (I re-tried running at least version 2.6.16 on the same Debian system).
This is not a problem tied to our network configuration: all other users of our network can access that URL without problem, using any other OS.
This is not a hardware problem: when running kernel 2.6.16 or Windows XP on the same hardware, I have no problem.
Running ethereal, I observed that the HTTP TCP data is actually received, but seems dropped by the kernel before being delivered to the client process (browser or telnet).
If you can't reproduce that problem, please tell me what additional information you would need.
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (990, 'unstable'), (500, 'testing')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17-1-686
Locale: LANG=en_US.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8)
Versions of packages linux-image-2.6.17-1-686 depends on:
ii initramfs-tools [linux-initra 0.73 tools for generating an initramfs
ii module-init-tools 3.2.2-3 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.17-1-686 recommends:
ii libc6-i686 2.3.6-16 GNU C Library: Shared libraries [i
-- debconf information:
linux-image-2.6.17-1-686/preinst/bootloader-initrd-2.6.17-1-686: true
linux-image-2.6.17-1-686/postinst/old-dir-initrd-link-2.6.17-1-686: true
linux-image-2.6.17-1-686/postinst/bootloader-test-error-2.6.17-1-686:
linux-image-2.6.17-1-686/postinst/create-kimage-link-2.6.17-1-686: true
linux-image-2.6.17-1-686/postinst/old-initrd-link-2.6.17-1-686: true
linux-image-2.6.17-1-686/postinst/kimage-is-a-directory:
linux-image-2.6.17-1-686/preinst/lilo-has-ramdisk:
linux-image-2.6.17-1-686/postinst/depmod-error-2.6.17-1-686: false
linux-image-2.6.17-1-686/prerm/removing-running-kernel-2.6.17-1-686: true
linux-image-2.6.17-1-686/postinst/old-system-map-link-2.6.17-1-686: true
linux-image-2.6.17-1-686/preinst/elilo-initrd-2.6.17-1-686: true
linux-image-2.6.17-1-686/preinst/overwriting-modules-2.6.17-1-686: true
linux-image-2.6.17-1-686/preinst/already-running-this-2.6.17-1-686:
linux-image-2.6.17-1-686/preinst/abort-overwrite-2.6.17-1-686:
linux-image-2.6.17-1-686/postinst/bootloader-error-2.6.17-1-686:
linux-image-2.6.17-1-686/preinst/lilo-initrd-2.6.17-1-686: true
linux-image-2.6.17-1-686/preinst/failed-to-move-modules-2.6.17-1-686:
linux-image-2.6.17-1-686/preinst/initrd-2.6.17-1-686:
linux-image-2.6.17-1-686/postinst/depmod-error-initrd-2.6.17-1-686: false
linux-image-2.6.17-1-686/preinst/abort-install-2.6.17-1-686:
linux-image-2.6.17-1-686/prerm/would-invalidate-boot-loader-2.6.17-1-686: true
--- End Message ---
--- Begin Message ---
Hi,
thanks for your bug report. I added now to the release notes this section:
<sect1 id="window-scaling"><heading>Certain networking site cannot be reached by TCP</heading>
<p>
Since 2.6.17, Linux uses TCP window scaling which is specified in RFC 1323 in
an aggressive way. Some servers have a broken behaviour, and announce wrong
window sizes for themself. Please see the bugs
<url id="http://bugs.debian.org/381262" name="#381262"> and
<url id="http://bugs.debian.org/395066" name="#395066">
for more information.
</p>
If you think more information should be added, please feel free to
reopen this bug report.
Cheers,
Andi
--
http://home.arcor.de/andreas-barth/
--- End Message ---