[ILUG] ARP Insanity!

[Nick Murtagh]

Paul Jakma wrote:
> Or, before resorting to above, try installing a static ARP entry on 
> the 'old' server with 'arp'?

On Server A:

# arp -s 10.2.1.230 -i eth0 00:20:ED:79:2F:70
# arp -an
? (10.2.1.1) at 00:00:5E:00:01:02 [ether] on eth0
? (10.2.1.228) at 00:20:ED:79:2F:75 [ether] on eth0
? (10.2.1.6) at 00:20:ED:79:2F:70 [ether] on eth0
? (10.2.1.230) at 00:20:ED:79:2F:70 [ether] PERM on eth0
? (10.2.1.229) at 00:20:ED:79:22:C3 [ether] on eth0
#


On a third machine:

# arp -d 10.2.1.230
# arp -an
? (10.2.1.21) at 00:11:43:FD:8A:4E [ether] on eth0
? (10.2.1.228) at 00:20:ED:79:2F:75 [ether] on eth0
? (10.2.1.230) at <incomplete> on eth0
? (10.2.1.1) at 00:00:5E:00:01:02 [ether] on eth0
# arping -b 10.2.1.230
ARPING 10.2.1.230 from 10.2.1.22 eth0
Unicast reply from 10.2.1.230 [00:20:ED:79:2F:70]  0.771ms
Unicast reply from 10.2.1.230 [00:14:22:B0:5E:80]  0.855ms
Unicast reply from 10.2.1.230 [00:20:ED:79:2F:70]  0.705ms
Unicast reply from 10.2.1.230 [00:14:22:B0:5E:80]  0.748ms
Unicast reply from 10.2.1.230 [00:20:ED:79:2F:70]  0.679ms
Unicast reply from 10.2.1.230 [00:14:22:B0:5E:80]  0.723ms
Sent 3 probes (3 broadcast(s))
Received 6 response(s)
#


 >:(