Re: [dhcwg] MAC Address Tracking via DHCP6
"Rajiv Asati (rajiva)" <rajiva@cisco.com> Fri, 01 February 2013 15:47 UTC
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From: "Rajiv Asati (rajiva)" <rajiva@cisco.com>
To: Chuck Anderson <cra@WPI.EDU>
Thread-Topic: [dhcwg] MAC Address Tracking via DHCP6
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Date: Fri, 01 Feb 2013 15:47:48 +0000
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Cc: "dhcwg@ietf.org" <dhcwg@ietf.org>, Brian Hamacher <bhamacher@westianet.com>, Philipp Kern <pkern@debian.org>, "ipv6@ietf.org" <ipv6@ietf.org>
Subject: Re: [dhcwg] MAC Address Tracking via DHCP6
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Hi Chuck, Yah, but draft-ietf-dhc-dhcpv6-client-link-layer-addr-opt is for DHCPv6 clients, as you rightly pointed out, and not for SLAAC/static hosts. Cheers, Rajiv -----Original Message----- From: Chuck Anderson <cra@WPI.EDU> Date: Friday, February 1, 2013 10:42 AM To: Rajiv Asati <rajiva@cisco.com> Cc: Maglione Roberta <roberta.maglione@telecomitalia.it>, "dhcwg@ietf.org" <dhcwg@ietf.org>, Brian Hamacher <bhamacher@westianet.com>, "ipv6@ietf.org" <ipv6@ietf.org>, Philipp Kern <pkern@debian.org> Subject: Re: [dhcwg] MAC Address Tracking via DHCP6 >There is also draft-ietf-dhc-dhcpv6-client-link-layer-addr-opt-04 >which handles the case for DHCPv6 clients. That also requires no >changes to clients--only the DHCPv6 Relay Agent. > >On Fri, Feb 01, 2013 at 02:56:03PM +0000, Rajiv Asati (rajiva) wrote: >> Hi Maglione, >> >> Thanks for your review and a good question. >> >> draft-ietf-dhc-addr-registration introduces a new IPv6 Neighbor >>Discovery >> option and a >> new DHCPv6 option to propagate the address registration information >> from the hosts to the network. It requires the changes on the host. >> >> >> >> draft-asati-dhc-ipv6-autoconfig-address-tracking, on the other hand, >> requires no changes to IPv6 Neighbor Discovery and no changes to the >> hosts. It introduces changes in DHCPv6 specific to the last hop router >>and >> the DHCP server, thereby keeping the changes within the network (and >>DHCP >> server). >> >> >> Cheers, >> Rajiv >> >> -----Original Message----- >> From: Maglione Roberta <roberta.maglione@telecomitalia.it> >> Date: Friday, February 1, 2013 3:26 AM >> To: Rajiv Asati <rajiva@cisco.com> >> Cc: "ipv6@ietf.org" <ipv6@ietf.org>, Philipp Kern <pkern@debian.org>, >> Brian Hamacher <bhamacher@westianet.com> >> Subject: RE: MAC Address Tracking via DHCP6 >> >> >Hello Rajiv, >> > is there any relation between your draft and >> >draft-ietf-dhc-addr-registration-00? >> > >> >Thanks >> >Regards, >> >Roberta >> > >> > >> >-----Original Message----- >> >From: ipv6-bounces@ietf.org [mailto:ipv6-bounces@ietf.org] On Behalf Of >> >Rajiv Asati (rajiva) >> >Sent: Thursday, January 31, 2013 6:27 PM >> >To: Philipp Kern; Brian Hamacher >> >Cc: ipv6@ietf.org >> >Subject: Re: MAC Address Tracking via DHCP6 >> > >> > >> >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-track >>>in >> >g >> > >> >Cheers, >> >Rajiv >> > >> >-----Original Message----- >> >From: Philipp Kern <pkern@debian.org> >> >Organization: The Debian Project (http://www.debian.org) >> >Date: Wednesday, December 12, 2012 10:37 AM >> >To: Brian Hamacher <bhamacher@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
- Re: [dhcwg] MAC Address Tracking via DHCP6 Rajiv Asati (rajiva)
- Re: [dhcwg] MAC Address Tracking via DHCP6 Chuck Anderson
- Re: [dhcwg] MAC Address Tracking via DHCP6 Rajiv Asati (rajiva)
- Re: [dhcwg] MAC Address Tracking via DHCP6 Ted Lemon
- Re: [dhcwg] MAC Address Tracking via DHCP6 Tomek Mrugalski
- Re: [dhcwg] MAC Address Tracking via DHCP6 Rajiv Asati (rajiva)
- Re: [dhcwg] MAC Address Tracking via DHCP6 Ted Lemon
- Re: [dhcwg] MAC Address Tracking via DHCP6 Tim Chown