freebsd ARP problem

Коньков Евгений kes-kes at yandex.ru
Thu Aug 4 05:56:52 UTC 2011


Hi, Peter.

GW-77.93.52.9/29 <---------> 77.93.52.10/29-MyServer
                               00:1b:21:45:da:b8

I have change LAN and not it is:
GW-77.93.52.9/29 <---------> 77.93.52.10/29-MyServer
                               00:30:67:5a:44:72

ping 77.93.52.9
^C
--- 77.93.52.9 ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss

tcpdump -n -i re0 arp
 15:39:46.540277 ARP, Request who-has 77.93.52.10 (00:1b:21:45:da:b8) tell 77.93.52.9, length 46
        0x0000:  001b 2145 dab8 0006 d602 e0c0 0806 0001  ..!E............
        0x0010:  0800 0604 0001 0006 d602 e0c0 4d5d 3409  ............M]4.
        0x0020:  001b 2145 dab8 4d5d 340a 0000 0000 0000  ..!E..M]4.......
        0x0030:  0000 0000 0000 0000 0000 0000            ............

77.93.52.9 thinks that 77.93.52.10 have old MAC 00:1b:21:45:da:b8
Why freebsd do not answer for 'who-has' packet?


PA> Eugenie

PA> I didn't understand your question, so I ask you for some clarification.
PA> 3 августа 2011 г. 17:19 пользователь Коньков Евгений
PA> <kes-kes at yandex.ru> написал:
>> Hi, all.
>>
>> I delete IP address from one server and add it to this one.
PA> You moved IP address from one server to second one. Right?

>> But connection is not up, because of remote server (77.93.52.9)
>> ask IP and notice MAC in whe-has frame.
PA> Are you trying to connect from second server to third one?
PA> Whose ip address is 77.93.52.9?
>>
>> 15:39:46.540277 ARP, Request who-has 77.93.52.10 (00:1b:21:45:da:b8) tell 77.93.52.9, length 46
>>        0x0000:  001b 2145 dab8 0006 d602 e0c0 0806 0001  ..!E............
>>        0x0010:  0800 0604 0001 0006 d602 e0c0 4d5d 3409  ............M]4.
>>        0x0020:  001b 2145 dab8 4d5d 340a 0000 0000 0000  ..!E..M]4.......
>>        0x0030:  0000 0000 0000 0000 0000 0000            ............
>>
>> Must freebsd replay to this who-has packet with
>> ARP, Reply 77.93.52.10 is at ....
>>  or it must it ignore, becase of 00:1b:21:45:da:b8 is not its MAC address?
PA> Are these servers in different network segments?
>>
>>
>> --
>> С уважением,
>>  Коньков                          mailto:kes-kes at yandex.ru
>>
>> _______________________________________________
>> freebsd-questions at freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
>> To unsubscribe, send any mail to "freebsd-questions-unsubscribe at freebsd.org"
>>






-- 
С уважением,
 Коньков                          mailto:kes-kes at yandex.ru



More information about the freebsd-questions mailing list