From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040124 Description of problem: I am having network issues with the kernel version above and several below it. I have an Athlon 1800+ with a K7S5a (sis735) and I am using the built in NIC sis900. ICMP and UDP traffic to my LAN is fine, but TCP packets aren't. Subsequently every connection looks like the host is down. Is this a known problem or is it unique? It's happen with several of the newer kernel development versions. Version-Release number of selected component (if applicable): kernel-2.6.2-1.87 How reproducible: Always Steps to Reproduce: 1. have my system 2. isntall FC1 3. install listed kernel version 4. TCP packets go heywire. Actual Results: TCP packets don't go out. Expected Results: A successful connection. Additional info: Nothing is shown when trying to initiate a TCP connection.
check thread; http://www.redhat.com/archives/fedora-test-list/2004-February/msg00652.html either run command as root; echo 0 > /proc/sys/net/ipv4/tcp_ecn or add to file /etc/sysctl.conf and reboot; # Disable ECN net.ipv4.tcp_ecn = 0
Re-open if disabling ECN didnt fix this