DNS-question
Johann Spies <jspies-/[email protected]>
| Newsgroups | gmane.linux.admin.managers |
|---|---|
| Message-ID | <[email protected]> |
We have a class B network. Our DNS-servers' data gets updated every 10
minutes - dumped from a database.
With two similar entries in the named data-files I get different
results when querying them. Why would that be?
The following example illustrates my problem:
Entries in the named datafiles:
> sudo grep bywoner *
db.sun:bywoner.sun.ac.za. in a 146.232.129.121
db.sun.rev:121.129.232.146.in-addr.arpa. in ptr bywoner.sun.ac.za.
> sudo grep kaaskas *
db.sun:kaaskas.sun.ac.za. in a 146.232.128.39
db.sun.rev:39.128.232.146.in-addr.arpa. in ptr kaaskas.sun.ac.za.
Now dns-queries:
> host bywoner
bywoner.sun.ac.za has address 146.232.129.121
> host kaaskas
Host kaaskas not found: 3(NXDOMAIN)
> host 146.232.129.121
121.129.232.146.in-addr.arpa domain name pointer bywoner.sun.ac.za.
> host 146.232.128.39
39.128.232.146.in-addr.arpa domain name pointer kaaskas.sun.ac.za.
> dig bywoner.sun.ac.za
; <<>> DiG 9.2.1 <<>> bywoner.sun.ac.za
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2258
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 2
;; QUESTION SECTION:
;bywoner.sun.ac.za. IN A
;; ANSWER SECTION:
bywoner.sun.ac.za. 86400 IN A 146.232.129.121
;; AUTHORITY SECTION:
sun.ac.za. 86400 IN NS hippo.ru.ac.za.
sun.ac.za. 86400 IN NS ucthpx.uct.ac.za.
sun.ac.za. 86400 IN NS maties1.sun.ac.za.
sun.ac.za. 86400 IN NS maties2.sun.ac.za.
sun.ac.za. 86400 IN NS rain.psg.com.
;; ADDITIONAL SECTION:
maties1.sun.ac.za. 86400 IN A 146.232.128.1
maties2.sun.ac.za. 86400 IN A 146.232.128.10
;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Jul 25 11:20:44 2003
;; MSG SIZE rcvd: 201
> dig kaaskas.sun.ac.za
; <<>> DiG 9.2.1 <<>> kaaskas.sun.ac.za
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 52267
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;kaaskas.sun.ac.za. IN A
;; AUTHORITY SECTION:
sun.ac.za. 86400 IN SOA maties1.sun.ac.za. sysadm.sun.ac.za. 2003072221 28800 3600 604800 86400
;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Jul 25 11:20:51 2003
;; MSG SIZE rcvd: 86
Regards.
Johann
--
Johann Spies Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch
"Look not every man on his own things, but every man
also on the things of others." Philippians 2:4
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--
Johann Spies Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch
"Look not every man on his own things, but every man
also on the things of others." Philippians 2:4
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