gdnsd-plugin-reflect - gdnsd cache reflector plugin
Zonefile RRs using reflect resolution
reflect 10 DYNA reflect
reflect-dns 10 DYNA reflect!dns
reflect-edns 10 DYNA reflect!edns
reflect-both 10 DYNA reflect!both
reflect-best 10 DYNA reflect!best
is a resolution plugin that acts as a live debugging
tool. It reflects a view of the client's network address back in the response
in the form of "A" or "AAAA" RRs. It can be used with both
"DYNA" and "DYNC" RRs, and will return address data in
The plugin can operate in one of four modes named "dns",
"edns", "both", and "best", which can be
selected by using the mode name as a resource name in the zonefile, as shown
in the example above. The default mode is "best". The modes operate
- In the "dns" mode, the address in the response is
always the source IP address of the request as seen by gdnsd. Note that
this is generally the public address of a central cache/resolver server
rather than the end-user client itself.
- In the "edns" mode, the address in the response
is the address sent by the client in the "edns-client-subnet"
option. If the client did not send such an option, the IPv4 address
0.0.0.0 is returned.
- In the "both" mode, both of the above results are
returned in the same response, but there is no artificial 0.0.0.0 added if
no "edns-client-subnet" option was available.
- In the "best" (default) mode, if the
"edns-client-subnet" option was specified its data is returned
as in the "edns" case, otherwise the source IP address is
returned as in the "dns" case.
The gdnsd manual.
Copyright (c) 2014 Brandon L Black <email@example.com>
This file is part of gdnsd.
gdnsd is free software: you can redistribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
gdnsd is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
gdnsd. If not, see <http://www.gnu.org/licenses/>.