"Dr. Andrew L. Blais" wrote: > > "Bill Rugolsky Jr." wrote: > > > > On Mon, Jul 09, 2001 at 04:08:22PM -0400, Dr. Andrew L. Blais wrote: > > > I've compiled linux-2.4.6 using patch-ac2. I used the .config file the > > > RH linux-2.4.3 RPM. I ran "make oldconfig" making the appropriate > > > answers where necessary. All went well with all the other makes. I > > > reboot using vmlinuz-2.4.6-ac2, and there are no error messages. I run > > > startx, and open netscape. Google comes up, and so do a bunch of other > > > sites. EXCEPT for some, e.g., www.ibm.com won't come up. Neither will > > > www.zdnet.com. I reboot into 2.4.3, and www.ibm.com is right there. Back > > > to 2.4.6-ac2, and no ibm. Back and forth. The same thing. What's up? > > > > Perhaps ECN (explicit congestion notification) is enabled in the -ac kernel? > > > > Try, > > > > echo 0 > /proc/sys/net/ipv4/tcp_ecn > > > > If that fixes it, then those websites probably have misconfigured routers. > > Read the linux kernel FAQ and send a polite e-mail to the webmaster at the > > site. > > > > You can turn ECN off by placing the following in /etc/sysctl.conf: > > > > net.ipv4.tcp_ecn = 0 > > > > This will set the value to zero each time the system boots. Linux has > > it on by default as a way to encourage the rest of the Internet to clean > > up its act. :-) > > > > Regards, > > > > Bill Rugolsky > > > > _______________________________________________ > > Seawolf-list mailing list > > [EMAIL PROTECTED] > > https://listman.redhat.com/mailman/listinfo/seawolf-list > > Yes Sir: > > echo 0 > /proc/sys/net/ipv4/tcp_ecn > > did what you said, as well as > > net.ipv4.tcp_ecn = 0 > > in /etc/sysctl.conf. > > I was going to ask how I configure the kernel so that ECN is disabled, > but a quick search of my .config file found CONFIG_INET_ECN, which I > used "make xconfig" to turn off. A recompile, reinstall, and reboot > confirmed my guess. I'll let someone else tell IBM that they need to > "clean up their act" .... Thanks for the help. > > >>> Andrew > > _______________________________________________ > Seawolf-list mailing list > [EMAIL PROTECTED] > https://listman.redhat.com/mailman/listinfo/seawolf-list I just found this interesting link: http://eltoday.com/article.php3?ltsn=2001-04-17-001-14-PS "Why Can't My 2.4 Kernel See Some Web Sites?" by Scott Courtney _______________________________________________ Seawolf-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/seawolf-list
