On Sat, 16 Jan 1999, Tim Fletcher wrote:
> > Now, my question is:
> > Am I right in guessing that the problem is stale arp table entries, and is
> > there any way to tell the rest of the net/routers that this arp entry
> > should be flushed?
>
> humm have you tried setting the hardware address of the alias when you
> bring it up to be neither of the machines and then moving it and the alias
> over to the other machine when you move it.
Last time I checked, you had to DOWN the interface before you were allowed
to change the MAC address... this would be fine if he was talking about a
2nd card in each machine... but certainly isn't something you want to do
if it's the only interface, and you aren't on the console :-(
> > I've cheched rfc826 and as far as I can see, the arp protocol makes
> > it possible if I can generate an arp request with the .176 number as
> > sender address, but I'm not sure if there's a nice utility for doing
> > just that.
I'm curious about the answer to the original question, because the guys
controlling a local cisco seem to think that they can broadcast arp
updates, yet I'm fairly sure that my linux boxes lose a few minutes of
connectivity when the main outgoing router changes MAC addresses...
-Tom
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