Truncated, retrying in TCP on Reverse lookup

[Stephane Bortzmeyer]

On Thu, Jul 09, 2009 at 05:50:02AM -0700,
 Fr34k <freaknetboy at yahoo.com> wrote 
 a message of 119 lines which said:

> There should be one and only one PTR for that IP.

No. No good reason for such restriction.

> $ host 196.7.126.38

>From a machine with a proper Internet connection (i.e. no stupid
firewall blocking DNS packets > 512 bytes or blocking TCP), there are
no problems to retrieve the PTR:

% dig -x  196.7.126.38

; <<>> DiG 9.4.3-P1 <<>> -x 196.7.126.38
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32828
;; flags: qr rd ra; QUERY: 1, ANSWER: 15, AUTHORITY: 2, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;38.126.7.196.in-addr.arpa.	IN	PTR

;; ANSWER SECTION:
38.126.7.196.in-addr.arpa. 86323 IN	PTR	www.thewash.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	www.gisstaff.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	www.cheaprentalcars.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	www.adventureservices.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.penoc.org.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.travelsense.net.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.mantlemapper.com.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.quintessentia.net.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.datanetsolutions.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.spatialdimension.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.spatialwebserver.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.spatialwebserver.com.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.adventureservices.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	mail.explorationservices.co.za.
38.126.7.196.in-addr.arpa. 86323 IN	PTR	spa004-1.cust-gw.za.mtnbusiness.net.

;; AUTHORITY SECTION:
126.7.196.in-addr.arpa.	86323	IN	NS	ns1.iafrica.com.
126.7.196.in-addr.arpa.	86323	IN	NS	ns2.iafrica.com.

;; ADDITIONAL SECTION:
ns2.iafrica.com.	17787	IN	A	196.7.142.133

;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Jul 10 22:40:13 2009
;; MSG SIZE  rcvd: 621