Port number in A record in zone file

Torsten Segner torsten at segner.eu
Thu Nov 17 13:53:34 UTC 2011


Am Thu, 17 Nov 2011 14:46:45 +0100
schrieb Aleksander Kurczyk <aleksanderkurczyk at o2.pl>:

> Hello,
> Yesterday I asked here how can I run multiple named processes on different ports in one OS. Now I have some troubles with that. How can I specify the port number in zone file A record?
> 


There is a simple answer: You can't.

An A record consists of only an IPv4 address.



Ciao
Torsten



> My config and zone files:
> 
> 095160160157:/var/named root# cat srv1/named.conf
> options {
>         directory "/var/named/srv1";
>         version "olo-dns-server-1.0";
>         allow-transfer { 127.0.0.1; };
>         allow-recursion { 127.0.0.1; };
>         listen-on 127.0.0.1 port 2001;
> };
> 
> zone "srv1.local" IN {
>         type master;
>         file "srv1.local.master";
> };
> 
> zone "srv2.local" IN {
>         type slave;
>         file "srv2.local.slave";
> };
> 
> zone "srv3.local" IN {
>         type slave;
>         file "srv3.local.slave";
> };
> 
> zone "." IN {
>         type hint;
>         file "named.ca";
> };
> 
> zone "localhost" IN {
>         type master;
>         file "localhost.zone";
>         allow-update { none; };
> };
> 
> zone "0.0.127.in-addr.arpa" IN {
>         type master;
>         file "named.local";
>         allow-update { none; };
> };
> 
> 
> 095160160157:/var/named root# cat srv1/srv1.local.master 
> $TTL 1d
> $ORIGIN srv1.local.
> @       IN      SOA     ns1 hostmaster 2011111700 12h 5m 3w 2h
>         IN      NS      ns1
>         IN      NS      ns2
>         IN      NS      ns3
> ns1     IN      A       127.0.0.1    <<-- port 2001
> ns2     IN      A       127.0.0.1    <<-- port 2002
> ns3     IN      A       127.0.0.1    <<-- port 2003
> 11      IN      A       192.168.1.11
> 12      IN      A       192.168.1.12
> 13      IN      A       192.168.1.13
> 
> 
> 095160160157:/var/named root# cat srv2/named.conf
> options {
>         directory "/var/named/srv2";
>         version "olo-dns-server-1.0";
>         allow-transfer { 127.0.0.1; };
>         allow-recursion { 127.0.0.1; };
>         listen-on 127.0.0.1 port 2002;
> };
> 
> zone "srv1.local" IN {
>         type slave;
>         file "srv1.local.slave";
> };
> 
> zone "srv2.local" IN {
>         type master;
>         file "srv2.local.master";
> };
> 
> zone "srv3.local" IN {
>         type slave;
>         file "srv3.local.slave";
> };
> 
> zone "." IN {
>         type hint;
>         file "named.ca";
> };
> 
> zone "localhost" IN {
>         type master;
>         file "localhost.zone";
>         allow-update { none; };
> };
> 
> zone "0.0.127.in-addr.arpa" IN {
>         type master;
>         file "named.local";
>         allow-update { none; };
> };
> 
> 
> 095160160157:/var/named root# cat srv2/srv2.local.master
> $TTL 1d
> $ORIGIN srv2.local.
> @       IN      SOA     ns1 hostmaster 2011111700 12h 5m 3w 2h
>         IN      NS      ns1
>         IN      NS      ns2
>         IN      NS      ns3
> ns1     IN      A       127.0.0.1    <<-- port 2001
> ns2     IN      A       127.0.0.1    <<-- port 2002
> ns3     IN      A       127.0.0.1    <<-- port 2003
> 11      IN      A       192.168.1.11
> 12      IN      A       192.168.1.12
> 13      IN      A       192.168.1.13
> 
> 
> 095160160157:/var/named root# cat srv3/named.conf
> options {
>         directory "/var/named/srv3";
>         version "olo-dns-server-1.0";
>         allow-transfer { 127.0.0.1; };
>         allow-recursion { 127.0.0.1; };
>         listen-on 127.0.0.1 port 2003;
> };
> 
> zone "srv1.local" IN {
>         type slave;
>         file "srv1.local.slave";
> };
> 
> zone "srv2.local" IN {
>         type slave;
>         file "srv2.local.slave";
> };
> 
> zone "srv3.local" IN {
>         type master;
>         file "srv3.local.master";
> };
> 
> zone "." IN {
>         type hint;
>         file "named.ca";
> };
> 
> zone "localhost" IN {
>         type master;
>         file "localhost.zone";
>         allow-update { none; };
> };
> 
> zone "0.0.127.in-addr.arpa" IN {
>         type master;
>         file "named.local";
>         allow-update { none; };
> };
> 
> 
> 095160160157:/var/named root# cat srv3/srv3.local.master
> $TTL 1d
> $ORIGIN srv3.local.
> @       IN      SOA     ns1 hostmaster 2011111700 12h 5m 3w 2h
>         IN      NS      ns1
>         IN      NS      ns2
>         IN      NS      ns3
> ns1     IN      A       127.0.0.1    <<-- port 2001
> ns2     IN      A       127.0.0.1    <<-- port 2002
> ns3     IN      A       127.0.0.1    <<-- port 2003
> 11      IN      A       192.168.1.11
> 12      IN      A       192.168.1.12
> 13      IN      A       192.168.1.13
> 
> 




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