Probably a *very* stupid question....

Jim Reid jim at
Tue Nov 16 18:40:57 UTC 1999

>>>>> "Ola" == =?iso-8859-1?Q?Ola Nystr=F6m?= <iso-8859-1> writes:

    Ola> On Tue, 16 Nov 1999, JJ wrote:
    >> Hi Folks,
    >> Is it possible to do a round-robin on PTR records ??

Yes, but it's probably not a sensible thing to do. Why do want half
the reverse lookups of the to return one name and the other
half return another name?
    >>  IN PTR
    >>  IN PTR
    >> I've tried this on a server but a lookup of always
    >> returns the last address....

Well that could be because you're querying a name server which doesn't
do round-robin or has been configured to always return a set of
resource records in the same order. Or you're just unlucky because
every time you do a lookup, another odd-numbered set of lookups is
done before you lookup the name again.

    Ola> IFAIK there is no roundrobin on PTR.

Round robin works on ANY set of identical resource records of any

    Ola> Why would you like to do that?

Good question. It makes no sense to me, but I presume it does to the
original poster.

    Ola> You should use CNAME on the hostname instead.

    Ola> server		IN	A
    Ola>	IN	CNAME	server

This is utterly wrong. What you've suggested above has got nothing
whatsoever to do with PTR records.

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