Reverse DNS for prefix

If we have add the option dns_server=fqdn.of.your.dns.server[:other-ns] in out tspc.conf, we can do the following steps to delegate the Reverse DNS to our dns server.

Reverse DNS allows host to map IP addresses to hostnames.

To delegate the reverse DNS of our /48 or /64 to our dns server, we have to do the following:

• Edit our named.conf and add the following line (you have to change the value 1.2.3.4 with you real values)

  zone "4.3.2.1.0.8.b.0.e.f.f.3.ip6.int" {
     type master;
     file "reverse-3ffe-b80-1234.ip6.int";  
     allow-transfer {none;};
  };
  

• Create the reverse-3ffe-b80-1234.ip6.int file (adjust the values to your real case) and fill it with something like this:

  $TTL 3D
  
  @       IN      SOA     ipv6.nowhere.net. postmaster.nowhere.net. (
                             2001110500  ; serial
                             3H          ; refresh
                             15M         ; retry
                             1W          ; expiry
                             1D )        ; mininum
          IN      NS      ns.nowhere.net.
  
  ;
  ;----------------------------------------,
  ; network part /64   | Host part 64 bits |
  ;--------------------|-------------------'
  ; 3ffe:0b80:1234:0001:0000:0000:0000:0001
  
  ;       -------------------------------,
  ;  Your Network| Your prefix (48 bits) |
  ;       -------|-------|-------|-------|
  $ORIGIN 1.0.0.0.4.3.2.1.0.8.b.0.e.f.f.3.ip6.int.
  
  ; Hosts of your network
  ;------------------------------ 
  ; 64 bit host address part.     
  ;------|-------|-------|------- 
  1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0   in ptr  first.ipv6.nowhere.net.
  
  ; End of zone
  

• Restart bind and check if there is some error in the log file.

• Try it. Teste the delegation:

  dig 4.3.2.1.0.8.b.0.e.f.f.3.ip6.int NS
  

  and now test your dns:

  dig 4.3.2.1.0.8.b.0.e.f.f.3.ip6.int SOA
  

If it works well, reverse DNS should now be delegated to your server.

Ok, that's all. Now you can start to play with IPv6, try if your tools are IPv6 compatible and amuse with it.