On Fri, 2005-06-03 at 21:49 +0100, Paul Howarth wrote: > On Fri, 2005-06-03 at 15:36 -0500, David G. Mackay wrote: > > I've got an old AMD-K6-400 box that's been running FC3 that I've been > > using as a router/firewall. I recently ran up2date, and suddenly I > > couldn't access several websites. After playing around for a bit, I did > > a clean install of FC4t3 on the box to see if that would resolve the > > problem. It didn't. I can access most sites normally. I can also plug > > the Alcatel USB Speedtouch modem into a Win2k box, and access the > > problematic websites. > > > > I've done some archive searches to see if anyone else experienced this, > > and came across the ecn problem, but my /proc/sys/net/ipv4/tcp_ecn is 0. > > Ironically, one of the sites that I can't access is bugzilla.redhat.com > > (although fedora.redhat.com is fine). > > > > When I look at a tcpdump of the situation, I see the tcp connection > > handshake followed by a GET request to the web site. Instead of > > returning the contents of the web page in response, I see a packet with > > no data acking the get request packet. > > > > Does anyone have any ideas? > > See if this helps: > > # echo 0 > /proc/sys/net/ipv4/tcp_window_scaling Thanks, but it didn't. Just for fun I set it on the firewall and the system that I was browsing from, and still no joy. Dave
