Re: Invalidate arp entry for moved ip address. How?

[Kaz Kylheku <[EMAIL PROTECTED]>]

> 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.

You can generate arp requests from a machine by flushing its arp cache
and then attempting some sort of communication (e.g. ping). This will cause
a ``who-is'' request to be broadcast onto the wire. Whether machines across
the network snoop the reply and update their caches is another question;
I don't know the answer of the top of my head.

The Linux arp utility doesn't seem to have a ``flush entire cache'' option,
but you can delete individual entries with -d.

-
To unsubscribe from this list: send the line "unsubscribe linux-net" in
the body of a message to [EMAIL PROTECTED]