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I am working on setting up tinydns to serve DNS data for my local network (several virtual machines, actually) and dnscache to serve both data about my local network and big internet. So, here is my setup:

• machine has one interface with two ip addresses: 10.0.0.4 and 10.0.0.5
  


• 
  tinydns serves data about local network on 10.0.0.4
  


• 
  dnscache works on 10.0.0.5 with following config:
  
  

  # ls root/servers
  
  @  ies.iu
  
  # cat root/servers/@
  
  8.8.8.8
  
  # cat root/servers/ies.iu
  
  10.0.0.4
  
  

  
  
  And things work well when making forward resolution (only answer part of output is shown):

$ dig earthbind.ies.iu @10.0.0.4

earthbind.ies.iu.       86400   IN      A       10.0.0.4

$ dig earthbind.ies.iu @10.0.0.5

earthbind.ies.iu.       83777   IN      A       10.0.0.4

So far, so good. Trying reverse lookup:

$ dig -x 10.0.0.4 @10.0.0.4

4.0.0.10.in-addr.arpa.  86400   IN      PTR     earthbind.ies.iu.

$ dig -x 10.0.0.4 @10.0.0.5 # No answer!

Am I expecting from dnscache something it is not supposed to do? What is correct way then?

This issue is important because if I put 10.0.0.5 into /etc/resolv.conf, ping (but not ping -n) will have significant delay before starting sending packets.

domain-name-system internal-dns reverse-dns djbdns

share

asked 8 mins ago

Dmitry BogatovDmitry Bogatov

1

New contributor

Dmitry Bogatov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

0

I am working on setting up tinydns to serve DNS data for my local network (several virtual machines, actually) and dnscache to serve both data about my local network and big internet. So, here is my setup:

• machine has one interface with two ip addresses: 10.0.0.4 and 10.0.0.5
  


• 
  tinydns serves data about local network on 10.0.0.4
  


• 
  dnscache works on 10.0.0.5 with following config:
  
  

  # ls root/servers
  
  @  ies.iu
  
  # cat root/servers/@
  
  8.8.8.8
  
  # cat root/servers/ies.iu
  
  10.0.0.4
  
  

  
  
  And things work well when making forward resolution (only answer part of output is shown):

$ dig earthbind.ies.iu @10.0.0.4

earthbind.ies.iu.       86400   IN      A       10.0.0.4

$ dig earthbind.ies.iu @10.0.0.5

earthbind.ies.iu.       83777   IN      A       10.0.0.4

So far, so good. Trying reverse lookup:

$ dig -x 10.0.0.4 @10.0.0.4

4.0.0.10.in-addr.arpa.  86400   IN      PTR     earthbind.ies.iu.

$ dig -x 10.0.0.4 @10.0.0.5 # No answer!

Am I expecting from dnscache something it is not supposed to do? What is correct way then?

This issue is important because if I put 10.0.0.5 into /etc/resolv.conf, ping (but not ping -n) will have significant delay before starting sending packets.

domain-name-system internal-dns reverse-dns djbdns

share

asked 8 mins ago

Dmitry BogatovDmitry Bogatov

1

New contributor

Dmitry Bogatov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I am working on setting up tinydns to serve DNS data for my local network (several virtual machines, actually) and dnscache to serve both data about my local network and big internet. So, here is my setup:

• machine has one interface with two ip addresses: 10.0.0.4 and 10.0.0.5
  


• 
  tinydns serves data about local network on 10.0.0.4
  


• 
  dnscache works on 10.0.0.5 with following config:
  
  

  # ls root/servers
  
  @  ies.iu
  
  # cat root/servers/@
  
  8.8.8.8
  
  # cat root/servers/ies.iu
  
  10.0.0.4
  
  

  
  
  And things work well when making forward resolution (only answer part of output is shown):

$ dig earthbind.ies.iu @10.0.0.4

earthbind.ies.iu.       86400   IN      A       10.0.0.4

$ dig earthbind.ies.iu @10.0.0.5

earthbind.ies.iu.       83777   IN      A       10.0.0.4

So far, so good. Trying reverse lookup:

$ dig -x 10.0.0.4 @10.0.0.4

4.0.0.10.in-addr.arpa.  86400   IN      PTR     earthbind.ies.iu.

$ dig -x 10.0.0.4 @10.0.0.5 # No answer!

Am I expecting from dnscache something it is not supposed to do? What is correct way then?

This issue is important because if I put 10.0.0.5 into /etc/resolv.conf, ping (but not ping -n) will have significant delay before starting sending packets.

domain-name-system internal-dns reverse-dns djbdns

share

asked 8 mins ago

Dmitry BogatovDmitry Bogatov

1

New contributor

Dmitry Bogatov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$ dig earthbind.ies.iu @10.0.0.4

earthbind.ies.iu.       86400   IN      A       10.0.0.4

$ dig earthbind.ies.iu @10.0.0.5

earthbind.ies.iu.       83777   IN      A       10.0.0.4

$ dig -x 10.0.0.4 @10.0.0.4

4.0.0.10.in-addr.arpa.  86400   IN      PTR     earthbind.ies.iu.

$ dig -x 10.0.0.4 @10.0.0.5 # No answer!

share

asked 8 mins ago

Dmitry BogatovDmitry Bogatov

1

New contributor

Dmitry Bogatov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share

asked 8 mins ago

Dmitry BogatovDmitry Bogatov

1

New contributor

Dmitry Bogatov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 mins ago

Dmitry BogatovDmitry Bogatov

1

New contributor

Dmitry Bogatov is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 8 mins ago

Dmitry BogatovDmitry Bogatov

1