arp mapping question

Hi there,
I am trying to get rid of an old arp mapping that points to quite a few
ip addresses, so one hardware address points to 5 IPs as per file
/var/arpwatch/arp.dat, it seems permanent so for this reason trying to use
these IPs that point to the same MAC give duplicate messages on the network
when I am trying to reuse them.
I had at some point a linux machine on the network with this MAC/IP address
and it used to be in the dns zone as well and I just removed it from the dns
zone but still I cannot use these IPs which still point to old linux box mac
address in the arp.dat above.
Any help would be appreciated. Thanks, Calin

Tester wrote:

> Hi there,
> I am trying to get rid of an old arp mapping that points to quite a
> few
> ip addresses, so one hardware address points to 5 IPs as per file
> /var/arpwatch/arp.dat, it seems permanent so for this reason trying to use
> these IPs that point to the same MAC give duplicate messages on the
> network when I am trying to reuse them.
> I had at some point a linux machine on the network with this MAC/IP
> address and it used to be in the dns zone as well and I just removed it
> from the dns zone but still I cannot use these IPs which still point to
> old linux box mac address in the arp.dat above.
> Any help would be appreciated. Thanks, Calin

man arp

you can delete ARP entries using arp -d hostname.

On Thu, 27 Nov 2003 01:14:05 +0100, Robert Spielmann wrote:
> Tester wrote:

>> I am trying to get rid of an old arp mapping that points to quite a
>> few
>> ip addresses, so one hardware address points to 5 IPs as per file
>> /var/arpwatch/arp.dat, it seems permanent so for this reason trying to use
>> these IPs that point to the same MAC give duplicate messages on the
>> network when I am trying to reuse them.

> man arp
>
> you can delete ARP entries using arp -d hostname.

You might be able to update the arp-table of other hosts as well.
Be carefull though.


man arping

--
-Menno.