Mac OSX 10.7

[Arturo Servin]

	Silly question.

	What transport is used to query the DNS server, IPv6 or IPv4, i.e. If the host has the IPv4 and IPv6 address of the resolver, which one is used?

-as
	

On 21 Jul 2011, at 08:01, Tim Chown wrote:

> 
> On 20 Jul 2011, at 17:01, Jeroen Massar wrote:
> 
>> On 2011-07-20 17:05 , Iljitsch van Beijnum wrote:
>> [..]
>>>> Let's say what else 10.7 has, but so far it looks good.
>>> 
>>> RFC 3484 policy table support? (Try ip6addrctl)
>> 
>> Where is that one, as I can't seem to ssh outbound anymore without it
>> going for IPv4 first..... grmbl
> 
> I'm seeing preference for IPv6 for http and ssh here in Lion, when both A and AAAA records are returned quickly for the target.   Previous to Lion the IP version choice seemed dictated by the ordering of the A and AAAA responses, so if you got an A back first then IPv4 was used (and to force IPv6 you could ping6 the target).
> 
> I wonder if they've done something 'happy eyeballs'-like with the responses now, so if the A and AAAA records come back quickly enough there's a preference for IPv6, otherwise the received data is used, be that A or AAAA?   Or are you seeing fast DNS reposes for A and AAAA Jeroen?
> 
> I guess whatever their mechanism is is no longer 'secret' within the beta, so we ought to be able to get some public confirmation from Apple.
> 
> Tim