Re: up checksum errors while bootping NCSA telnet

Andi Kleen (ak@muc.de)
Tue, 29 Dec 1998 20:00:56 +0100

In muc.lists.linux-kernel, you wrote:
>Hi,
>
> I'm quite happy with 131ac11. But I need a solution - What should be
>done to eliminate udp checksum errors while bootping NCSA telnet? I'm sure
>that something could be done on linux side, because there no such problem
>with 2.0 kernels (to be honest, I don't remember exactly when ncsa telnet is
>stoped, but I remember that some time ago it's works nicely. And nothing
>changed except kernel)

Maybe NCSA telnet does not like extended TCP options.

Try:

echo 0 >/proc/sys/net/ipv4/tcp_timestamps
echo 0 >/proc/sys/net/ipv4/tcp_sack
echo 0 >/proc/sys/net/ipv4/tcp_window_scaling

-Andi

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