Different DNS replies depending on IP block

Question

I own a service that has mirrors all around the world. I'd like to Bind to respond a DNS request of my A ADDRESSes differently, depending on the IP block that made the request
For instance, from a computer from an ISP provider would have this:
[root@computer1 etc]# host bbs.archlinux.org
bbs.archlinux.org is an alias for archlinux.org.
archlinux.org has address 66.211.213.17
And another person from another ISP would have:
[root@ktk7 etc]# host bbs.archlinux.org
bbs.archlinux.org is an alias for archlinux.org.
archlinux.org has address 208.69.32.230
Anyone has a clue how I could do that ? Thanks in advance

Answer 1

cactus wrote:
With bind it is called 'views'.
you use match-clients (a match element for the view).
http://www.oreillynet.com/pub/a/oreilly … _0501.html (first google result)
you might also do some searching on geodns. there are services that provide this for you (akamai's geodns service for example), and some patches out there for Bind (i believe).
Thanks for the reply. I'm trying to use the views directive but they don't seem to work. Here is an excerpt of my current named.conf:
view "brazil" {
match-clients { 201.17.105.0/24; };
zone "brlink.org" {
type master;
file "/etc/bind/db.brlink.br";
view "international" {
match-clients { any; };
zone "brlink.org" {
type master;
file "/etc/bind/db.brlink.int";
I've used 201.17.105.0/24 only for testing porpuse because I own a server inside this block.
The results I'm getting are this: if in the named.conf the 'view brazil' is the first directive, all DNS requests, no matter where they came from, will be replied with db.brlink.br. If 'view international' is the first directive to be read in named.conf, any IP address will receive it's contents.
What am I missing ? How should I proceed ?
Thanks in advance