dhclient information with multiple mac address

Ralph Blach rcblach at blach.dnsalias.org
Sat Mar 11 16:43:06 UTC 2006


A is the all controlling device,  it must do the DHCP request for B, C 
and and so forth,
A  has acces B, C and .... mac address and can set their  ip address's.  
B, C, and so for cannot do
DHCP request,
DHCP server's---network ---A---network-|----B

Is DHCP really designed work in the case or is this outside of the DHCP 
Do all DHCP server really accept the client ID?
Or do some do not?

I know that if a client ID is not transmitted, the mac address is used 
client ID,

Next question,   does is matter if the chaddr in the DHCP request packet
is differrent than the mac address which the ehternet encodes in the 
link level header
of the packet?

ie,  A's mac address is 00:01:02:03:04:05 and B's is 00:aa:bb:cc:dd:ee.  
So could the link level header in the
packet be 00:01:02:03:04:05 while the chaddr  is 00:aa:bb:cc:dd:ee?





Joerg Mayer wrote:

>On Fri, Mar 10, 2006 at 11:15:26PM -0500, Ralph Blach wrote:
>>Yes, except machine A does all the work,
>>Machine A Creates the packets DHCP packets for  machine B, C, and so forth.
>I'm still trying to understand the setup.
>Are hosts B, C, ... located behind A (so A is acting as a L3/L2 device
>that needs to be used for other machines to talk to B and C or is
>traffic to B and C possible without A being involved (once B and C have
>their addresses)?
>     Joerg

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