On Sunday, March 18, 2001, at 08:42 PM, Mohana Krishna Penumetcha wrote:
>
> On Fri, 16 Mar 2001, Jeroen Ruigrok/Asmodai wrote:
>
>> -On [20010316 06:25], Mohana Krishna Penumetcha ([EMAIL PROTECTED]) wrote:
>>> 16:41:25.623476 arp who-has 0.0.0.0 tell 10.0.36.130
>>> 16:41:30.639372 arp who-has 0.0.0.0 tell 10.0.36.130
>>> 16:41:40.649838 arp who-has 0.0.0.0 tell 10.0.36.130
>>> 16:41:45.631430 arp who-has 0.0.0.0 tell 10.0.36.130
>>> 16:41:50.640533 arp who-has 0.0.0.0 tell 10.0.36.130
>>> 16:42:00.651104 arp who-has 0.0.0.0 tell 10.0.36.130(--> pcs130)
>>>
>>> i am little confused what this means, since 0.0.0.0 means "this host"?
>>
>> Not necessarily, 0.0.0.0 can also mean default gateway, which is the
>> more common use nowadays. 0.0.0.0 for `this host' is an old use IIRC.
>>
>
> i should check the code to see under what conditions the 0.0.0.0 is
> used.
>
>>> or is it that, it is meant to update the arp entry corresponding to
>>> pcs130 on other hosts in the subnet? in this case, it can as well say
>>> "10.0.36.130" instead of "0.0.0.0".
>>
>> I am not sure right now, might be because my head's a little foggy.
>>
>> What does arp -a and netstat -rn look like on the FreeBSD box and on
>> the
>> Linux box?
>
> i didn't capture all that data, but i think, it is not very difficult
> to
> reproduce the same dump, i will check out for what ip addr, these
> packets
> are generated.
The "default route" usage is internal-only; I think the only time that
this address can trigger anything in the arp code is
- assigning that address to an interface (which may inadvertently
occur on something like "ifconfig IF up").
- sending or receiving a packet with that address in the IP header,
which should only occur for BOOTP/DHCP client startup.
Regards,
Justin
Justin C. Walker, Curmudgeon-At-Large *
Institute for General Semantics |
Director of Technology | If you're not confused,
Nexsi Corp. | You're not paying attention
1959 Concourse Drive |
San Jose, CA 95131 |
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