As previously mentioned, you're not breaking any rules and depending on
the circumstances it may be a perfectly correct thing to do.
The person with the "problem" may be miffed that a reverse lookup dosn't
resolve to your hostname even though you have an A record pointing at the
IP. Perhaps you should see what the PTR record for the IP address is. They
may want you to convert your A record to a CNAME for the hostname the
reverse lookup resolves to so that the A -> PTR mapping is 1 to 1 and all
other forward name resolutions are CNAMEs.
This may suit both of you fine or it may be a really bad idea depending on
circumstances.
Jono
Stu Fleming
22/11/2005 08:02 PM
To: nznog(a)list.waikato.ac.nz
cc:
Subject: [nznog] DNS serving IPs outside controlled range
I have a...friend, let's say...who operates a DNS server at a small
ISP. In a few of the zone files, there are A records that resolve to IP
addresses outside of the Class C that my..friend...controls. My friend
has been told that this is "against the rules" and that it is "causing
problems".
Questions:
- is resolving an A record outwith the delegated IP range "against the
rules"?
- if so, is there any documentation of the rules?
- what potential problems could this cause to the network that contains
the IP address to which the A records point?
Thanks for any advice.
Regards,
Stu
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