Accessing attributes with the same name

[Isaac <tom...@so...>]

I am working on a cablemodem registration script that collects 
information on the user, and stores it in an ldap database.  So far 
everything is working fine, but I'm not sure how I should go about 
implementing the next stage.

As it is the database requires that I store 2 ip addresses and 2 mac 
addresses for each user (one for the modem, and one for the client).  My 
question is this:  How do I distinguish between the modem mac address/ip 
and the client?

Also, at the moment, if the user registers a new device on the network 
their old entry is overwritten. I would like the user to be able to 
register multiple devices, and to have the database keep distinct 
records for each device.

Here is how the attributes are laid out in my script:

$CreateArray = [
		objectClass		=> 
["ipHost","ieee802Device","person","organizationalPerson"],
		cn				=> $query->param('login'),
		sn				=> $query->param('name'),			userPassword		=> $query->param('pass')
,
		street			=> $query->param('address'),
		telephoneNumber	=> $query->param('phone'),
		ipHostNumber		=> $client_IP,
		macAddress		=> $client_MAC,
		ipHostNumber		=> $modem_IP,
		macAddress		=> $query->param('modem_MAC'),
    ];

Thank you for your time,
	
	-Isaac Davis-King