[BIND 8.2] Negative TTL not working ???

[Mark_Andrews at iengines.com]

> 
>   I switched from 8.2.1 to 8.2.2p5 and so I had to add a $TTL and to set
> the negative responses TTL into my zone files. But it doesn't seem to
> work...
>   If I set a zone file like for example.com like this :
> $TTL 2D
> @       IN      SOA     ns1.example.com. hostmaster.example.com. (
>                         1999111701      ; Serial
>                         1D              ; Refresh
>                         2H              ; Retry
>                         4W              ; Expire
>                         8H)             ; Negative responses TTL
> 
>   And If I dig it I won't get the right minimum TTL of 2 days !?!
> # dig example.com
> 
> ; <<>> DiG 8.2 <<>> example.com 
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
> ;; QUERY SECTION:
> ;;      example.com, type = A, class = IN
> 
> ;; AUTHORITY SECTION:
> example.com.            8H IN SOA       ns1.example.com.
> hostmaster.example.com. (
>                                         1999111701      ; serial
>                                         1D              ; refresh
>                                         2H              ; retry
>                                         4W              ; expiry
>                                         8H )            ; minimum
> 
> 
> ;; Total query time: 4 msec
> ;; FROM: www to SERVER: default -- 127.0.0.1
> ;; WHEN: Wed Nov 17 04:51:18 1999
> ;; MSG SIZE  sent: 31  rcvd: 96
> 
>   Am I missing something ?
> 
	Yes.

	Go read RFC 2308 and look at the new use for the minimum field
	and why $TTL was added.  The answer above is a negative answer,
	and the TTL is correct.

	Mark
> -- 
> 
>   ECO.
>   ~~~~
> 
--
Mark Andrews, Internet Engines Inc. / Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at iengines.com