Mac OS X 10.7, still no DHCPv6

Franck Martin franck at
Sun Feb 27 22:53:31 CST 2011

Oh... did not know about the heavy baggage...

No, when I first played with IPv6 only network, I found out that RD was silly, it gives an IP adddress but no DNS, and you have to rely on IPv4 to do that. silly, so my understanding is then people saw the mistake, and added some DNS resolution... Because the only option was to get DHCPv6 to get the DNS, but then why create RD in the first place?

So I found this whole saga, to put it mildly "stupid", like when people were talking about migrating to IPv6 but the root servers did not even have an IPv6 address: silly!

So I really don't care between RD and DHCPv6, what I care, is that they should be able to do their job correctly on their own.

----- Original Message -----
From: "Owen DeLong" <owen at>
To: "Franck Martin" <franck at>
Cc: "Matthew Palmer" <mpalmer at>, nanog at
Sent: Sunday, 27 February, 2011 6:08:28 PM
Subject: Re: Mac OS X 10.7, still no DHCPv6

Look, can we stop arguing about whether someone needs DHCP or not,
whether they need SLAAC or not. Let's just get both solutions to a mature
and useful state where a network administrator can pick the one that works
best for their environment and move on.

Devices, routers, OSs, etc. should support both. The IETF should stop letting
the two working groups focus on damaging the other protocol and we should
stop treating this as a competition or a battle and start treating it as options
to accomplish a task.


On Feb 27, 2011, at 1:25 PM, Franck Martin wrote:

> Yes I don't understand why we need DHCPv6, true RD did not have DNS information to pass, but that is fixed, no?
> ----- Original Message -----
> From: "Matthew Palmer" <mpalmer at>
> To: nanog at
> Sent: Sunday, 27 February, 2011 4:06:29 PM
> Subject: Re: Mac OS X 10.7, still no DHCPv6
> On Sun, Feb 27, 2011 at 08:56:33AM -0500, Ray Soucy wrote:
>> Mac OS X 10.7 does support RDNSS (RFC 5001) so it is able to get DNS
>> server information in an IPv6-only environment.  Of course nobody else
>> has implemented that yet, making Apple a "special case" host once
>> again (I don't even think Cisco supports the option in their T series
>> yet).
> radvd and rdnssd work together on Linux nicely to provide RDNSS support. 
> Works a treat.
> - Matt

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