IPv6 equivalent to DHCP Option 82 for geolocating customer MACs to certain ports of Multi-port Layer 2 demarcation devices

[Ben Jencks]

On Fri, May 6, 2011 at 16:47, Francois Menard <francois at menards.ca> wrote:
> Folks,
>
> What's the most promising IPv6 equivalent to DHCP Option 82 for geolocating customer MACs to certain ports of Multi-port Layer 2 demarcation devices ?
>
> F.

Well, technically DHCP option 82 locates the DHCP request packet to
the switchport. The equivalent DHCPv6 option seems to be Remote-ID,
option 37 defined in RFC 4649. You'd still need some equivalent of
DHCP snooping, though.

If you don't want to use stateful DHCPv6, you don't actually get to
assign addresses, so you just have to observe what the clients do. You
can do this with ARP table scraping on the router and MAC table
scraping on the access switches.

-Ben