I have a strange problem, outgoing TCP packets get stuck at the SYN_SENT
point for certain websites. Two of the sites I have this problem with
are zdnet.com and compusa.com. When I try to telnet to port 80, the
connection will never be established, and netstat shows it in the
SYN_SENT state.
This problem occurs with kernels 2.4.12-2.4.14. It does not occur with
2.4.10. I am making these connections via a PPP link, but a friend of
mine has duplicated the exact same problem using a ethernet connection
(passing over DSL). We do not have the same ISP, so I don't think that
is the problem.
Any help, or requests for more debugging info would be appreciated.
Please CC message to me, I am not subscribed to the list.
Thanks.
-james
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[] James A. Hillyerd <[email protected]> - Java Developer
[] PGP 1024D/D31BC40D F87B 7906 C0DA 32E8 B8F6 DE23 FBF6 4712 D31B C40D
"James A. Hillyerd" wrote:
> I have a strange problem, outgoing TCP packets get stuck at the SYN_SENT
> point for certain websites. Two of the sites I have this problem with
> are zdnet.com and compusa.com. When I try to telnet to port 80, the
> connection will never be established, and netstat shows it in the
> SYN_SENT state.
Did you by chance enable ecn in the kernel?
Try:
echo "0" > /proc/sys/net/ipv4/tcp_ecn
This is a FAQ IIRC -
cu
jjs