Ethereal-users: Re: [Ethereal-users] ARP packet

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From: "Ronnie Sahlberg" <ronnie_sahlberg@xxxxxxxxxxxxxx>
Date: Sat, 23 Aug 2003 11:50:24 +1000
There will never be a response to those packets.

These packets are called gratiotous arps and they are sent by a host when
the interface/link goes up
for the purpose of preloading the arp table on all other hosts in this
broadcast domain.

The host that sends this arp is the host 192.168.0.252 itself.
It does not want to ask the network about its own mac address since it
already knows this.
It just has had an interface/link up event and just wants to broadcast to
everyone else that
hewy this is me, please preload your arptable.

a sideffect/abuse of the arp protocol.


It does however tell you that the host that did send this packet just had a
link/interface up event.
If you get a steady stream of these it may mean that the link to that host
is bouncing.

----- Original Message -----
From: "Pierre Mallard"
Sent: Friday, August 22, 2003 11:36 PM
Subject: [Ethereal-users] ARP packet


> Hi !
> Got a video transmitter that sends arp packet like
> this :
> 192.168.0.252 Broadcast ARP who has 192.168.0.252?
> tell 192.168.0.252
>
> And noone respond ..
> Could anybody tell me how I can send a response to
> 192.168.0.252 ?
> THX
> Pierre
>
>
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