I stand corrected again, as needed.  The gratuituous arp should
be formatted in whatever the correct way is.

The machine that encountered loss of connectivity due to interface IPs
being swapped is running 3.4-STABLE that was cvsup'd on January 7, 2000.
If in fact some change was made in the sending of gratuituous arp
since them to correct the problem, then nothing more needs to be done.

Perhaps it would be useful for 'ifconfig' to have an option to
send a gratuituous arp upon request by the user, without having
to reconfigure any IP address.


On Mon, 8 May 2000, Mike Smith wrote:

> > 
> > By "gratuituous arp" I was really saying "gratuitous arp reply".
> > The machine needs to send a packet of the type
> > 
> >    arp reply is-at 0:40:5:42:d6:de
> > 
> > Rahul
> That won't achieve the desired result, which is to complain if someone 
> _else_ replies to the arp request that we send.
> The above is achieved by virtue of sending the ARP request (anyone 
> watching ARP messages will learn that we are the address in the "tell 
> x.x.x.x" field).  What we're trying to provoke is someone else saying 
> x.x.x.x is-at xx.xx.xx.xx.xx.xx, which will result in a console message 
> on our system informing the administrator that someone else is already 
> using that IP address.
> -- 
> \\ Give a man a fish, and you feed him for a day. \\  Mike Smith
> \\ Tell him he should learn how to fish himself,  \\  [EMAIL PROTECTED]
> \\ and he'll hate you for a lifetime.             \\  [EMAIL PROTECTED]

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