Figuring out address of peer in DHCP environment

[Paul Bertain]

Have you tried to ping 224.0.0.1?  That is the all-hosts address and  
most systems respond to it nowadays.

Paul

On Dec 21, 2007, at 9:31 AM, el chino cudeiro wrote:

> If these clients are in the same subnet, probably you can test  
> something on
> multicast dns or similar.
> Take a look at http://en.wikipedia.org/wiki/Zeroconf to start your
> investigations.
> regards
>
>
> On Dec 21, 2007 3:29 PM, Peter Karlsson <peter at softwolves.pp.se>  
> wrote:
>
>> Hi!
>>
>> I'm working with two devices that can have their IP addresses  
>> configured
>> dynamically by DHCP. I know the other device's Ethernet MAC  
>> address. Is
>> there a way to look up the other device's IP address using DHCP or  
>> some
>> other protocol?
>>
>> I cannot simply look up ARP tables because the other device will  
>> not be in
>> my device's ARP cache before I've actually communicated with it,  
>> and the
>> other device will not know my address until I send it a message,  
>> so it
>> cannot initiate communication, either.
>>
>> I almost thought I had found the solution in InARP, but it doesn't  
>> seem to
>> be support Ethernet. Does anyone know of an alternative?
>>
>> I've been toying with the idea of scanning the entire subnet, but  
>> if I'm
>> on
>> something like a 10.0.0.0/8 network, that would take quite some time.
>>
>>
>> I'm sorry if this is the wrong mailing list to ask, it seemed like  
>> the
>> right
>> place for this kind of question, though.
>> --
>> \\// Peter - http://www.softwolves.pp.se/
>>
>>
>
>
>