On 23/02/17 17:54, Anthony K wrote:
On 23/02/17 08:27, Rommel Rodriguez Toirac wrote:
The solution was another IP address to this network device and then
everything work fine.
Why this happend? How I can erase the link beteewn MAC
00:1D:09:FF:44:4B and IP 192.168.41.4? Where can be stored this link?
Right now in the network is not assignet the IP address
192.168.41.4 to no one device (printserver, switch, router,
workstation or server) and still whe I make arping have the answer:
rommel@p6:~$ arping 192.168.41.4
ARPING 192.168.41.4 from 192.168.41.6 enp3s0
Unicast reply from 192.168.41.4 [00:1D:09:FF:44:4B] 0.631ms
Unicast reply from 192.168.41.4 [00:1D:09:FF:44:4B] 0.623ms
Unicast reply from 192.168.41.4 [00:1D:09:FF:44:4B] 0.623ms
Unicast reply from 192.168.41.4 [00:1D:09:FF:44:4B] 0.691ms
^CSent 4 probes (1 broadcast(s))
Received 4 response(s)
One thing to try if you have access to the switch where all the
devices are plugged in:
*$ sudo ping -f 192.168.41.4*
Then watch the switch for a lot of activity on 2 ports - the one you
are plugged into and another. The other busy port will be the one
that's causing you grief. If you have daisy chained switches, then it
might take a little longer to track it down.
Happy hunting - :).
_______________________________________________
Another solution, if you are the admin with access to the router, is to
null route the packets from that IP. The person using that device will
let you know shortly after (lack of Internet access is the quickest way
to get the attention of users on the network):
$ sudo ip r a blackhole 192.168.41.4
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