Two-in-one DNS server with BIND9 - multiple RRs of singleton type

Discussion in 'HOWTO-Related Questions' started by c4rdinal, Apr 15, 2008.

  1. c4rdinal

    c4rdinal New Member

    Hi,

    Had a problem seen on my log files as follows:

    Apr 15 09:21:39 deneb named[2963]: listening on IPv4 interface lo, 127.0.0.1#53
    Apr 15 09:21:39 deneb named[2963]: listening on IPv4 interface eth0, 192.168.1.101#53
    Apr 15 09:21:39 deneb named[2963]: command channel listening on 127.0.0.1#953
    Apr 15 09:21:39 deneb named[2963]: command channel listening on ::1#953
    Apr 15 09:21:39 deneb named[2963]: dns_master_load: /etc/bind/zones/external/db.domain:15: domain.com: multiple RRs of singleton type
    Apr 15 09:21:39 deneb named[2963]: zone domain.com/IN/internal: loading master file /etc/bind/zones/internal/db.domain: multiple RRs of singleton type
    Apr 15 09:21:39 deneb named[2963]: zone domain.com/IN/external: loaded serial 2
    Apr 15 09:21:39 deneb named[2963]: running
    Apr 15 09:21:39 deneb named[2963]: zone domain.com/IN/external: sending notifies (serial 2)

    Here's the entry on my /etc/bind/zones/external/db.domain file:

    ; Name Servers (NS) Records.
    IN NS ns1.domain.com.
    @ IN NS ns2.domain.com.

    ; Mail Exchange (MX) Records.
    MX 10 mx-1.domain.com.

    ; Addresses for the canonical name (A) records.
    localhost IN A 127.0.0.1
    ns1 IN A 192.0.2.1
    mx-1 IN A 192.0.2.1
    router IN A 192.0.2.1

    And my /etc/bind/zones/internet/db.domain:

    ; Name Servers (NS) Records.
    @ IN NS ns1.domain.com.
    ; IN NS ns2.domain.com.

    ; Mail Exchange (MX) Records.
    IN MX 10 mx-1.domain.com.

    @ IN A 192.0.2.1

    ; Addresses for the canonical name (A) records.
    localhost IN A 127.0.0.1
    ns1 IN A 192.168.1.101
    mx-1 IN A 192.168.1.101
    ns2 IN A 192.168.1.201
    client1 IN A 192.168.1.10
    client1 IN A 192.168.1.11

    $include "/etc/bind/zones/external/db.domain"

    Even I commented mx-1, router or change "A" to CNAME doesn't make any difference.

    How can I fix it?
     
    Last edited: Apr 15, 2008
    c4rdinal, Apr 15, 2008
    #1
  2. topdog

    topdog Active Member

    This is incorrect
    Code:
    ; Mail Exchange (MX) Records.
MX 10 mx-1.domain.com.
    remove it
     
    topdog, Apr 15, 2008
    #2
  3. c4rdinal

    c4rdinal New Member

    I removed the MX entry but it doesn't help. Any idea?

    Also, what's the correct entry in the Mail Exchange so i can fix it?

    TIA
     
    c4rdinal, Apr 15, 2008
    #3
  4. topdog

    topdog Active Member

    Code:
    named-checkzone domain /etc/bind/zones/external/db.domain
named-checkzone domain /etc/bind/zones/internal/db.domain
     
    topdog, Apr 15, 2008
    #4
  5. c4rdinal

    c4rdinal New Member

    Here's the result of the command:

    linux:~# named-checkzone domain /etc/bind/zones/external/db.domain
    zone domain/IN: loaded serial 2
    OK
    linux:~# named-checkzone domain /etc/bind/zones/internal/db.domain
    dns_master_load: /etc/bind/zones/external/db.domain:12: domain: multiple RRs of singleton type
    zone domain/IN: loading master file /etc/bind/zones/internal/db.domain: multiple RRs of singleton type
    linux:~#

    The problems seems to be in the internal db.domain file.

    Commenting the line fixed the problem.

    $include "/etc/bind/zones/external/db.domain"

    But should this be the case? Thank you so much for your help.
     
    c4rdinal, Apr 16, 2008
    #5
  6. topdog

    topdog Active Member

    Problem is you are not telling us what is in the zones, so i cannot figure out what the problem is but why are you including the external zone in the internal zone ?
     
    topdog, Apr 16, 2008
    #6

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