Cisco has had DHCPv6 (client, server and relay agent) in IOS since 2003. The first TAHI DHCPv6 testing was also in 2003. Results from the interoperability testing of several servers and clients was used to improve the DHCPv6 spec (RFC 3315), published in July 2003. The dibbler project DHCPv6 client and server have been available for several years, as well.

- Ralph


On Sep 28, 2007, at Sep 28, 2007,8:01 PM, Iljitsch van Beijnum wrote:

On 28-sep-2007, at 20:00, DE JUAN HUARTE FEDERICO wrote:

If a network administrator decides to set the M bit meaning that it intends to always manage the address configuration, can he expect all hosts to support the DHCP functionality?

In other words, is DHCP a MUST implement for IPv6 hosts?

Note that these are separate questions. The latter has already been answered.

As to the former: no, it's certainly not true that all hosts support DHCP. And the ones that do, may support one, two or three of the following capabilities:

- other configuration (such as DNS server addresses)
- prefix delegation
- address assignment

I would be interested in hearing about anyone actually using DHCPv6 address assignment. Two years ago when I wrote my book about IPv6 I couldn't find any servers or clients that supported this. I gather this has changed, but I'm not sure to what degree.

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