Re: [dnsext] Re: need new flag bit in EDNS, "do me no favours" (DMNF)

[Paul Wouters <[e-mail]>]

On Tue, 26 Oct 2010, Paul Vixie wrote:

> moreover, i'd like to open-and-shut this case.  please let's not innovate
> beyond the small desire i began with, which is to add opt-out.

I'm still unsure how this would work when users with a mix of preference
for opt-in/opt-out for dns-rewrites connect to the same cache. Will caches
now keep multiple answers based on the new RD EDNS DMNF bit? How would this
work together with DNSSEC? And with the business model of TTL=0

I do think the standard should be "do me no favours" and any mechanism
for "doing me favours" should be done by the user. Possible a nice gui to
enable such services might help those services, but I'm still unconvinced
this needs to be addressed at the protocol layer. I kind of feel along
the lines of RFC-1984.

Paul