On Thu, Aug 24, 2006 at 03:21:41PM -0700, Chuck Swiger wrote: > On Aug 24, 2006, at 3:10 PM, Fredrik Lindberg wrote: > >>Queries to 254.169.in-addr.arpa MUST return NXDOMAIN (or RCODE 3, > >>to choose a non-BIND specific term). > > > >We're talking about mDNS here, not DNS. I would argue that because > >mDNS is link-local it makes perfect sense to be able to resolve > >254.169.in-addr.arpa using mDNS. > > True, agreed-- that's in part (b) of what I quoted. The specific > part is: > > "Names that are resolvable only on the local link (such as through > use of > protocols such as Link Local Multicast Name Resolution [LLMNR]) MUST NOT > be used in off-link communication." > > What this means is that the hostname-to-address mapping for > 254.169.in-addr.arpa addresses must be unique per interface. If you > have two interfaces which are connected to different LLA subnets, > 169.254.1.1 might map to hostnameA on one, and that same IP might be > hostnameB on the other.
Hmm, that seems to argue for some further namespace mangling so forward lookups make sense. From that perspective the namespace really should be xxx.<interface>.local internally and xxx.local on the wire. Actually doing that would probably cause all sorts of problems though. :( -- Brooks
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