Re: [2.1.91-pre1] tcp wierdness and lockup

Alan Cox (alan@lxorguk.ukuu.org.uk)
Wed, 25 Mar 1998 20:29:58 +0000 (GMT)


> I have a friend that logs into my machine from a local ISP.
> This ISP doesn't allow ping packets (perhaps any icmp, not sure?).

In which case he will not be able to use the internet. He should change
provider immediately to an internet provider instead.

> logged in. However, after that, anything that requires a lot of output
> (more than a few lines) locks his connection up hard.
> (ls -la, xemacs, etc...)

This is bcause they have blocked ICMP. You cannot block all ICMP. Fortunately
this ISP will go out of business when Win98 comes out as it uses MTU
discovery and lower MTU's on slower links.

> Mar 25 10:15:46 jelerak kernel: kmalloc: Size (4294967220) too large
> Mar 25 10:15:46 jelerak kernel:
> Mar 25 10:15:46 jelerak kernel: IP: No memory available for IP forward

Whee thats a different bug. Dont think that is his ISP somehow. We tried
to allocate a negative sized packet and the kernel broke

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