Re: 2.2.x kernels missend odd-sized ICMP packets

Horst von Brand (vonbrand@inf.utfsm.cl)
Thu, 15 Apr 1999 11:07:03 -0400


Anthony Towns <aj@azure.humbug.org.au> said:
> On Sat, Apr 10, 1999 at 01:56:29PM +0100, Alan Cox wrote:
> > > Redhat 5.9 here, I see the packet loss behavior.
> > > Linux version 2.2.5 (root@student2-536.unh.edu) (gcc version egcs-2.91.66
> > > 19990314/Linux (egcs-1.1.2 release)) #2 Mon Mar 29 03:25:09 EST 1999
> > > Of course, with all those qualifications I shouldn't wonder why...

> > Both Red Hat 5.9 and the latest Debian ship with a buggy "ping"
> > program. This is nothing to do with the kernel

> Nor is it anything to do with ping per se -- I've tried compiling both
> the iputils ping (which RedHat uses, iirc) and the netkit-base ping
> (which Debian uses) under my glibc2.1/2.2/Debian unstable machine,
> and neither worked.

egcs up to 1.1.2 miscompile the ping program from netkit-base if optimizing
(function ip_cksum(), IIR the name C). I'd be surprised if the code base of
the pings you tried is different at all. Tried at home with various egcs's +
glibc-2.1.1pre1 on i586, linux-2.2.5, reported to the egcs folks.

-- 
Dr. Horst H. von Brand                       mailto:vonbrand@inf.utfsm.cl
Departamento de Informatica                     Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria              +56 32 654239
Casilla 110-V, Valparaiso, Chile                Fax:  +56 32 797513

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