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    IP Address from MAC Address - how?


    If I know the MAC address of a piece of hardware that is on my subnet, how do I get its IP address? (I use DCHP so the IP address can move around).

    I know I can ping all address on my subnet and then have a look at the ARP table (arp -a command). But I want to directly get the IP address by knowing the MAC.
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    thats a good question and i have been waiting for one of the gurus here to answer this as well.rarp i believe will give u the ip...think i read it was same or similar to bootp...but not quite sure(so dont attack me if im wrong).guess ill have to pull out the old books and find it when i get a chance this weekend.
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    You could have DHCP assign a specific IP address based on MAC address. Most(all?) implementations of DHCP allow for this.

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