Subject: Re: Forcing an ARP flush from NetBSD box
To: Paul Hoffman <phoffman@proper.com>
From: Laine Stump <lainestump@rcn.com>
List: netbsd-help
Date: 02/18/2000 18:36:07
At 02:09 PM 2/18/00 -0800, Paul Hoffman wrote:
>... including about a dozen virtual IP addresses.
>
>The problem is that this colo will not flush their ARP tables for me when I 
>swap boxes. (I know this because it has happened for me once before.) They 
>only flush their ARP tables about every four hours. I was told that Solaris 
>(?) has a program that emits, in essence, "you know that ARP entity for 
>a.b.c.d you have? Forget it. Oh, and here's a new one".

I recall fixing this once a long time ago by sending out pings from the new
machine to every other machine on the subnet. Of course, this subnet was
limited to NetBSD, Win95, and WinNT machines, so I don't know if that would
satisfy everybody.