host-identifier with IPv6

Chuck Anderson cra at WPI.EDU
Tue Mar 3 13:22:58 UTC 2009

On Tue, Mar 03, 2009 at 02:19:33AM -0600, David Farmer wrote:
> The following is my IPv6 link local address, fe80::208:74ff:fe24:ac0a, my 
> mac address is 0008:7424:ac0a, this is the simple transformation defined in 
> RFC 2464.  Therefore a DHCP server can be assured to get the EUI-64 
> version of the MAC address.  Transforming that back to a 48-bit MAC and 
> allowing operations in the DHCP server based on the MAC address should 
> be possible without modification of DHCPv6 clients or DHCPv6 relay agents.

> 64 address rather than leaving it up to the client through SLAAC to use its 
> EUI-64 or a privacy address. 

What about clients using privacy addressing (RFC 3041)?  It isn't 
clear to me from reading the RFC if this affects link local addresses, 
but if it does, they won't have a MAC address embedded in their link 
local address.

More information about the dhcp-users mailing list