Adding a little detail to Alain's comments - all three flavors of DUID are, in fact, defined in RFC 3315 to be stable for the lifetime of the host, independent of any changes to MAC addresses. Therefore, address assignment via DHCPv6 can be controlled by the DHCPv6 server to assign a stable address for the lifetime of the device.
- Ralph On 10/26/06 10:58 AM, "Durand, Alain" <[EMAIL PROTECTED]> wrote: >> -----Original Message----- >> From: Vlad Yasevich [mailto:[EMAIL PROTECTED] >> Sent: Thursday, October 26, 2006 9:58 AM >> To: Julien Laganier >> Cc: ipv6@ietf.org; Durand, Alain >> Subject: Re: address selection and DHCPv6 >> >>> The concept that a DHCP address is more stable then >> EUI64 base address is flawed in my opinion. Both depend on a >> piece of hardware that can fail or be changed. >> I guess manually configured addresses are a bit more stable. > > EUI64 are linked to the MAC address of a NIC. Replace that NIC on a > server > and your address change. > > DHCPv6 addresses are derived by the DHCPv6 server from the DUID passed > by the server. > It is fairly easy to make sure the DHCPv6 server will always return the > same address > for a particular DUID. If the DUID is not derived from a MAC address but > is > assigned by the organisation, the Ipv6 address will be much more stable > than EUI64. > But, more importantly, they will be centrally assigned, ie can be > propagated > to places that maitain ACLs. > > - Alain. > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > ipv6@ietf.org > Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
