At 9:33 -0500 3/7/05, �lafur Gu�mundsson wrote:
There have been discussions on adding some other RR types there but no concrete usage has been proposed.
Besides PTR, we also have SOA, NS, ;). Seriously, here is a presentation that was given at the APNIC meeting about 10 days ago:
http://www.apnic.net/meetings/19/docs/sigs/dns/dns-pres-fujiwara-improving-revdns.pdf
This talks about (re-)introducing A records to the reverse map.
Second issue I would like to raise is the fact that PTR is not a singleton RR but what does it mean to have multiple PTR records ? (open question to wg)
As far as the protocol, it means that the address has multiple domain names corresponding to it.
As far as applications, they can't easily deal with this. E.g., traceroute will just print one of the PTRs. (There are many apps that look a PTR records, traceroute is the only one I've really taken time to think about in this context.)
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Edward Lewis +1-571-434-5468
NeuStar
Achieving total enlightenment has taught me that ignorance is bliss.
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