enforced delegation only

[Bryan Irvine]

I recently started seeing some odd errors in my bind log.  I was
hoping someone could help me understand them.

Aug 21 12:39:45 fire named[30783]: enforced delegation-only for 'NET'
(ns4.dhservers.net/A/IN) from 192.35.51.30#53
Aug 21 12:39:45 fire named[30783]: enforced delegation-only for 'NET'
(ns3.dhservers.net/A/IN) from 192.35.51.30#53
Aug 21 12:39:59 fire named[30783]: enforced delegation-only for 'NET'
(ns3.dhservers.net/A/IN) from 192.35.51.30#53
Aug 21 12:39:59 fire named[30783]: enforced delegation-only for 'NET'
(ns4.dhservers.net/A/IN) from 192.35.51.30#53


Dig output:
; <<>> DiG 9.3.1 <<>> 192.35.51.30
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 868
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;192.35.51.30.                  IN      A

;; AUTHORITY SECTION:
.                       10800   IN      SOA     A.ROOT-SERVERS.NET.
NSTLD.VERISIGN-GRS.COM. 2006082100 1800 900 604800 86400

;; Query time: 56 msec
;; SERVER: 64.1.201.135#53(64.1.201.135)
;; WHEN: Mon Aug 21 12:48:43 2006
;; MSG SIZE  rcvd: 105