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Bug#201585: general: Browsers failing to display some pages in Sid (same pages do work in Woody)



The following commands let my browsers render www.netscape.com:

box# traceroute www.netscape.com
box# /etc/init.d/iptables stop
box# /etc/init.d/firewall start (after enabling port udp 4000)

 This makes me believe that the problem was solved. But only
www.netscape.com was rendered and after reboot neither www.netscape.com.

So my last answer is wrong, and problem persist.
Fortunetly Johan Björklund (thank you Johan) sent me a kindly email
pointing me to the right answer. I copy and paste his email:


"This might not be browser or distribution specific, rather kernel
specific.

Check wether you have TCP_ECN enabled or not in you kernel. The firewall
infront of www.netscape.com does not seem support this flag in TCP
packages.

laze:~# cat /proc/sys/net/ipv4/tcp_ecn 
1
laze:~# nc -w 2 www.netscape.com 80
netscape.com [64.12.151.215] 80 (www) : Connection timed out
laze:~# echo 0 > /proc/sys/net/ipv4/tcp_ecn 
laze:~# nc -w 2 www.netscape.com 80
HEAD / HTTP/1.0

HTTP/1.0 200 OK
set-cookie: dcisid=2164061494.1057961027.2714306; path=/
Set-Cookie: sampler=1058374553;DOMAIN=.aol.com:2080;PATH=/;EXPIRES=Tue,
06 Jul 2004 16:55:53 GMT
P3P: CP="NOI OUR PSA DEV PSD STA COM CUR"
MIME-Version: 1.0
Date: Wed, 16 Jul 2003 16:55:53 GMT
Server: AOLserver/3.5.5
Content-Type: text/html
Content-Length: 46358
Connection: close

laze:~# "


The key command  "echo 0 > /proc/sys/net/ipv4/tcp_ecn" solved the
problem completely. Now I just need to know what changes I have to make
to my custom kernel to make solution permanent.

This is not, of course, a Debian bug so thanks all of you for your
patient and sorry for wasting your time.

-- 
Guillermo <guifegar@teleline.es>




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