PTR and DNSSEC
Hongbo Shi
shi at goto.info.waseda.ac.jp
Fri Dec 15 00:41:02 UTC 2000
Hi, I have a question. Is a list of PTR records really necessary?
If we have
www1 A 192.168.1.1
www2 A 192.168.1.1
www3 A 192.168.1.1
...
Do you think we must have a list of PTR records?
1.1.168.192.in-addr.arpa. PTR www1.foo.com.
1.1.168.192.in-addr.arpa. PTR www2.foo.com.
1.1.168.192.in-addr.arpa. PTR www3.foo.com.
...
Do you think one is enough? Is the PTR record is just used for somebody want
to check if "www1.foo.com." is mapped to 192.168.1.1 exactly? Is that all?
Is there some other requirement? Such like DNSSEC won't move well without all
of the PTR records?
I hope somebody can drop me few lines. Thanks a lot!
Hongbo Shi
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