Subject: Re: [Bugme-new] [Bug 8338] New: NAT of TCP connections broken

From: Patrick McHardy <[email-masked]>
Date: Tue, 17 Apr 2007 15:00:57 +0200

Andrew Morton wrote:
>>On Mon, 16 Apr 2007 13:35:47 -0700 [email-masked] wrote:
>>http://bugzilla.kernel.org/show_bug.cgi?id=8338
>>
>>I'm using my debian box for sharing internet connection. After update to 
>>debian's 2.6.20 kernel (and adjusting new kernel configuration for NAT) NAT of 
>>TCP connections stoped working, while ICMP and UDP is working (ping, traceroute 
>>and DNS). When trying to open web page on a PC from my LAN (tried with linux 
>>and winxp), it sends the request but is unable to receive correct response from 
>>any site. On the router PC www works ok. 
>>
>>I tried both new "Independent connection tracking" as well as "Dependent 
>>(obsolete) connection tracking" options with no luck.
>>
>>tcp_window_scaling setting seems to have no effect.

Please send packet dumps from both the incoming and outgoing interfaces.