Red Hat Bugzilla – Bug 112754
arjanv's 2.6 network problems
Last modified: 2007-11-30 17:10:34 EST
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User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
Q312461; .NET CLR 1.0.3705; .NET CLR 1.1.4322)
Description of problem:
Formatted my hard drive. Installed fedora core 1. Installed apt and
added arjanv's 2.6 apt source to my sources list. Installed 2.6 bin
and source. Once booted into 2.6, i'm able to do functions like ping
and dig successfully. Samba and NTP are also working.
The problem is that I am unable to use programs like mozilla, gaim,
lynx. The programs preform the dns lookup successfully, then just
sits there while trying to connect.
I've tried compileing the network drivers into the kernel, toggleing
preempting, and turning off all firewall/filtering options. I've also
tried running these programs root and normal user, and have tried 3
diffrent network cards. (2 3com 3c509's and one intel 82557) When i
boot back to 2.4, everything works correctly.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.install fedora core 1 on a dell xps t700r
2.install arjanv's 2.6 kernel
3.try running mozilla/lynx
Actual Results: Programs like mozilla/gaim/evolution can't get out
to the internet.
Expected Results: Programs in question should work the same way as
in 2.4 kernel
Let me know if you need my kernel .configs or any stack trace logs
is it with all websites or only some?
my kernel has ECN enabled which is a TCP/IP performance feature but
some firewalls on the internet incorrectly block it...
(you can turn it off by doing echo 0 > /proc/sys/net/ipv4/tcp_ecn )
If this is the case then the owners of said firewalls need to upgrade
the firmware on it; at least on cisco the "broken" firmwares all had
security issues that were fixed since.
Bingo! Turning off ECN fixed the problem. I'm using a Netgear fvs318
NAT router with the latest firmware (firmware 2.1, as of oct30th
2003). It wasn't only blocking websites, it was effecting gaim and
Thank you, your work is greatly appreciated!!!