EDNS-CLIENT-SUBNET support

[Evan Hunt]

On Tue, Jun 24, 2014 at 03:14:35PM +0800, Tom Sawyer wrote:
> When I look through the source code of bind-9.9.5 I find fromwire_opt()
> function in lib/dns/rdata/generic/opt_41.c , which include a case about
> parsing DNS_OPT_CLIENT_SUBNET option. Is this indicating that bind will
> support EDNS-CLIENT-SUBNET recursive query soon?

We're open to it, but it probably won't happen unless someone
contributes the code to us, or sponsors the feature financially so we
can hire an engineer. It's an enormous job of work (requiring a major
rewrite of the cache database), and we have our hands full as it is. 
Sorry.

-- 
Evan Hunt -- each at isc.org
Internet Systems Consortium, Inc.