Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Ray Bellis
On 11 Sep 2012, at 02:41, james woodyatt j...@apple.com wrote: Really? How has the architecture team managed to overlook the obvious problem that homenets with interior routing domains comprising multiple networks cannot use either mDNS or LLMNR, which are confined to link-local

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Brian E Carpenter
On 11/09/2012 08:19, Ray Bellis wrote: ... So the point of the original email was to test that first assumption - i.e. what services don't (or can't) work in-home without a local unicast DNS zone. Excuse my ignorance, but if a LAN has both mDNS and DNS available, what happens when an app calls

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Brian E Carpenter
On 11/09/2012 14:11, Simon Perreault wrote: Le 2012-09-11 05:17, Brian E Carpenter a écrit : Excuse my ignorance, but if a LAN has both mDNS and DNS available, what happens when an app calls getnameinfo() ? Current situation is: implementation-dependant. In fact, getnameinfo() is not

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Michael Thomas
On 09/11/2012 12:19 AM, Ray Bellis wrote: I shall attempt to clarify. Iff all in-home services can be reached (whilst in-home) by mDNS-like protocols then we do not need an in-home unicast DNS zone. To reach those same services from _outside_ the home does of course need them to exist in the

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Michael Thomas
On 09/11/2012 09:01 AM, Ted Lemon wrote: There are a couple of options being pursued in the DHC working group; the DHCP address registration process would be an obvious mechanism for leveraging DHCP to populate the DNS. The idea here is that you do RA+SLAAC, or RA+CGA, and then you contact

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Ted Lemon
On Sep 11, 2012, at 12:24 PM, Michael Thomas m...@mtcc.com wrote: Maybe somebody can educated me, but isn't it a bit dangerous to use an auto-configured address as a way to contact a host? If I change out my ethernet hardware, for example, my auto-conf address would normally change too, right?

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Evan Hunt
On Tue, Sep 11, 2012 at 06:52:16AM -0700, Michael Thomas wrote: So no, let's not start from an assumption that it's an mDNS world in the home. I'd say let's start from the opposite assumption that it's a normal DNS world inside the home where mDNS is a way to auto-populate a DNS repository in

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Evan Hunt
On Tue, Sep 11, 2012 at 12:37:30PM -0400, Ted Lemon wrote: No. Things change. All that's required to deal with this is that the underlying protocol support it. The DHCP DUID identification system does support this kind of change, as long as the actual device doesn't change. If the

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread james woodyatt
On Sep 11, 2012, at 11:07 , Evan Hunt e...@isc.org wrote: This does raise a point, though: Dynamic DNS doesn't have an expiration mechanism. [...] My home zone is cluttered up with the names of a couple of dozen laptops and ipods belonging to neighbors and visitors over the past year.

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Evan Hunt
I recommend reading section 5 of Understanding Apple's Back-to-My-Mac Service [RFC 6281], which gives a brief summary of how this problem is effectively and reliably managed in that system. There you will find references to the following truly under-loved technical specifications:

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Curtis Villamizar
In message 504f65c7.4010...@mtcc.com Michael Thomas writes: On 09/11/2012 09:01 AM, Ted Lemon wrote: There are a couple of options being pursued in the DHC working group; the DHCP address registration process would be an obvious mechanism for leveraging DHCP to populate the DNS. The

Re: [homenet] Unicast DNS within the Homenet?

2012-09-11 Thread Curtis Villamizar
In message 20120911180743.gd15...@isc.org Evan Hunt writes: On Tue, Sep 11, 2012 at 12:37:30PM -0400, Ted Lemon wrote: No. Things change. All that's required to deal with this is that the underlying protocol support it. The DHCP DUID identification system does support this kind of