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On Mon, 4 Sep 2000, David S. Miller wrote:

> Date: Sun, 3 Sep 2000 20:23:11 -0400 (EDT)
> From: Gregory McLean <>
> [gregm@tweetie gregm]$ uname -a
> Linux 2.4.0-test7 #20 Sat Sep 2 16:17:06 EDT 2000 i686
> unknown
> [gregm@tweetie gregm]$ cat /proc/sys/net/ipv4/tcp_ecn
> 1
> Works just fine here.
> egrep CONFIG_INET_ECN src/linux/.config
> I bet you didn't even enable it in the kernel. That's a bug, if you
> don't CONFIG it in, the sysctl widget shouldn't be there... I'll fix
> that.

That's why many sites are not reachable after unsetting the option in the

I had the same problem and echoing '0'to /proc/sys/net/ipv4/tcp_ecn did
the trick. But for the following kernels I just disabled the
option. Anyway I am still able to echo /proc/sys/net/ipv4/tcp_ecn. And I
have the same problems.

So I am recompiling test8-pre4 with tcp_ecn enabled and then echoing 0 to
the sysctl option.

Linux Now

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