Multiple PTR records pointing to same IP address with different name

Kevin Darcy kcd at
Wed Mar 30 00:31:48 UTC 2005


>Is there any solution to create multiple reverse lookup PTR records
>pointing to same IP address with different hostname..?
>For Eg: I have got
>10              IN      PTR
>Can I have another PTR record pointing to same IP address with
>different hostname like
>10              IN      ????
It's legal to do that, but kind of pointless. No regular application or 
system utility looks beyond the first PTR record in the response.

Also, if you go down this path, you could end up making the mistake that 
many people have, namely having RRsets numbering in the dozens or 
hundreds, which overflow the maximum size of a DNS UDP packet, and thus 
trigger TCP retries, causing resource problems, firewall issues, etc.

                                                                  - Kevin

More information about the bind-users mailing list