There is a better way out to track the IPv6 addresses used by the hosts (via SLAAC or static) -
http://tools.ietf.org/html/draft-asati-dhc-ipv6-autoconfig-address-tracking Cheers, Rajiv -----Original Message----- From: Philipp Kern <pk...@debian.org> Organization: The Debian Project (http://www.debian.org) Date: Wednesday, December 12, 2012 10:37 AM To: Brian Hamacher <bhamac...@westianet.com> Cc: "ipv6@ietf.org" <ipv6@ietf.org> Subject: Re: MAC Address Tracking >On Tue, Dec 11, 2012 at 04:04:14PM -0600, Brian Hamacher wrote: >> I am looking for a good way to track my users MAC Addresses. I have a >> test DHCPv6 server up and running ISC 4.1.1-P1. When I look through my >> DHCP logs as well as my leases file I do not see the client MAC Address >> anywhere. Do I need to enable an option to allow this to be logged? I >> am looking to figure out how I can track what user had what IP Address >> at any given time. The MAC Address is traditionally how I have done >> this. > >One way would be to poll your routers' ND tables (like fetching ARP tables >in IPv4). As soon as you use relaying you most certainly won't get a >useable MAC address from your client, even though it might be possible in >the same network segment. (The MAC address is not copied from the wire >into the new relayed packet sent by the router to your server.) > >DHCPv6 uses the so-called client identifier extensively and not the MAC >address anymore. So you cannot do any static assignment based on MAC >addresses. > >Kind regards >Philipp Kern -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
