Problem w/ Forwarding Zone in Caching-Only Config

Michael W. Fleming mfleming at
Tue Jun 27 16:13:37 UTC 2017

We're setting up a wireless printing service that uses
Zeroconf/bonjour/rendevouz dns entries. The product, Presto, has it's
own dns server for a private, on-campus only zone (presto.). We're
running bind 9.9 with a master server, three slaves and two caching-only
servers (anycasted to We have the following in
named.conf (as per the vendor) on the caching-only servers.

zone "presto." {
      type forward;
      forward only;
      forwarders {; };

I manually added some required dns entries in our zone (as per vendor),

dig +short ptr

However, when I query the presto address, the query is sent to the
roots, not the presto server:

$ dig ptr

; <<>> DiG 9.11.1 <<>> ptr
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 46445
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

; EDNS: version: 0, flags:; udp: 4096

.			86400	IN	SOA 2017062002
1800 900 604800 86400

;; Query time: 2 msec
;; WHEN: Tue Jun 20 10:04:25 PDT 2017
;; MSG SIZE  rcvd: 129

I am by no means a bind wizard. Any help would be appreciated.

Many thanks.

Michael Fleming, IT Networking, Datacenter & Telecom, CSU, Bakersfield

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