On 23 Aug 2003 15:20:14 -0500 Mike Hicks <hick0088 at tc.umn.edu> wrote: > On Sat, 2003-08-23 at 07:56, E Lofstad wrote: > > I can not pull up the Slashdot or a couple other OSDN sites (like > > newsforge, linux.com). I don't know what has changed. I'm running > > Debian Sarge, but I don't think anything with the TCP stuff has > > changed in a while. After the initial response from slashdot, there > > are no more packets. Any thoughts? > > Heh, this looks like behavior caused by my favorite feature of the > kernel, but it could be something else. One of the most common causes > of sites disappearing from the 'Net is the use of TCP ECN (Explicit > Congestion Notification). This uses a previously reserved field in the > TCP header, so old routers that expect the field to be set to zero can > do things like drop packets or reset the connection. > I ran into that problem before with other sites, so I've have had ECN set to zero for a while. Could the ISP have inserted a transparent proxy which is screwing thing up? _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list