On 12/10/2009 09:06 AM, Joe Abley wrote:
On 2009-12-10, at 16:42, Michael Thomas wrote:
On 12/10/2009 08:38 AM, Mark Andrews wrote:
The way to do this is to put other data in the ip6.arpa/in-addr.arpa and stop trying to infer things from the PTR records.
Sigh. What is the "this" to which you refer?
I think Mark means "the question of whether a particular address is statically-assigned or dynamically-assigned", but...
Which assumes that that's the question that actually needs to be answered.
The problem space here is what's important. And I think it's worth considering that port 25 isn't the only abuse vector anymore.
... I agree that there's no clear limit to the kind of questions we could come up with that we could answer in such a way. Maybe we don't need to boil the ocean, though.
Sure, but positing the deployment of any infrastructure comes at a huge cost. Making certain that you're solving the right problem should be the first concern, since it's so expensive.
$ORIGIN 90.212.90.in-addr.arpa. @ SOA ... @ NS ... ; 13 PTR calamari.hopcount.ca. 13 HINFO Apple-Mac-Mini "Mac OS X Server" 13 RP jabley.hopcount.ca. . 13 TXT "dynamic"
See, that makes the assumption that that is the right question. Is it really though? Dynamic vs static is a placeholder for "authorized for this role or not", right? And not a very good one when you start to consider the larger world of protocols. I don't think it's "boiling the ocean" to ask the question of what the producers and consumers of that information are actually looking for. Mike
; * RP jabley.hopcount.ca. . * HINFO Nothing "Unallocated" * TXT "unallocated, should source no traffic"
Joe