On Fri, 22 Oct 2010 15:52:08 +1100 Karl Auer <ka...@biplane.com.au> wrote:
> On Thu, 2010-10-21 at 21:05 -0500, Jack Bates wrote: > > On 10/21/2010 8:39 PM, Ray Soucy wrote: > > > > > > How so? We still have RA (with a high priority) that's the only way > > > DHCPv6 works. I guess there is a lot of misunderstanding about how > > > DHCPv6 works, even among the experts... > > > > Actually, the last I checked, there are implementation of DHCPv6 without RA. > > I'll go out on a limb here and say that RA is not needed for DHCPv6. > RAs are still needed to convey the M/O bit values, so that end-nodes know they need to use DHCPv6 if necessary. As there are two address configuration methods, there is always going to be a need to express a policy to end-nodes as to which one they need to use. > A DHCPv6 client multicasts all its messages to the well-known > all-relays-and-servers address. A client needs only its link-local > address to do this. The relay (or server if it happens to be on the same > link) can thus talk to the client in the complete absence of RA. > There isn't a method to specify a default gateway in DHCPv6. Some people want it, however it seems a bit pointless to me if you're going to have RAs announcing M/O bits anyway - you may as well use those RAs to announce a default router too. Regards, Mark.