Re: another pre-2.0.31 problem

Petri Mattila (
Mon, 9 Jun 1997 16:09:58 +0300 (EEST)

>>> Kernel panic: skpush:under: <somewhere>:2
>>> In swapper task - not syncing

>> btw, this is 100% repro at least since
>> kernel 2.0.27 ! ... (took some time to hunt the bug down ...)

>I had the same problems as you did, also with a masqueraded local network
>and a Teles 16.3 ISDN-card.(also tried several kernel-versions and
>For some reasons however I had set (a long time ago) the MTU for the eth0
>at 1500 on my masqueraded hosts and for the ippp0 on the gateway at 576
>After changing the eth0 MTU-size on all my masqueraded hosts also at 576,
>the problem went away....
>Don't now the technical details about it, but I can imagine that a sort
>of overflow will occur when you try to transmit packages with a size of
>1500, and the gateway have to resize the packages to 576

If memory serves me correctly, I had exactly the same situation
where I was able to reproduce the OOPS. Masquerading host had mtu 576
and the other end had 1500. Of course ipppd should change mtu's
so that they match, but I haven't checked that it really does so.

-- petri