Hello!

> > The ping binary is the one from iputils (I can't find the version
> > number).

It is bug in iputils, it corrupts its own data, when data size
exceeds 65460. Fixed.

> > The ones from netkit and Nikhef-H give 100% packet loss but no kernel error.

It should not lose packets.

> I don't consider this a kernel bug, your ping version is old, update it.
> 
> root(tty/2/48)[/etc/rc.d]# ping -s 65468 localhost
> ping: packet size too large.

This ping is buggy too. 65468 is legal number.

What's about kernel error, it is bug. But I cannot reproduce it.
Please, make strace on buggy ping to figure out what it passes
to sendmsg.

Alexey Kuznetsov

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