reverse zone dynamic update problem

[Bob Vance]

>Do you have two zones for the same subnet???
>Something like:
>1.168.192.in-addr.arpa zone and
>1.168.192.dynamic.in-addr.arpa zone ???

Yes! :)
But, because 'dhcpd' updates with the *full quad*, the dynamic zone is
actually:

    "dynamic.in-addr.arpa."

So the PTR records are created therein.
Essentially:

$ORIGIN  dynamic.in-addr.arpa.
   ...
16.1.168.192    IN   PTR    blah.dynamic.vance.


The trick is in the "normal" 1.168.192.in-addr.arpa. zone !!
Therein, I create CNAMEs pointing to "...dynamic.in-addr.arpa."
as in:

$ORIGIN  1.168.192.in-addr.arpa.
    ...
;;; static PTRs:
    ...
;;; dynamic PTRS for my dynamic DHCP range :
16  IN CNAME   16.1.168.192.dynamic.in-addr.arpa.
     ...                   ^^^^^^^^^.________________ notice

Of course, I actually use a $GENERATE to create these:

$GENERATE 16-47  $  CNAME   $.1.168.192.dynamic.in-addr.arpa.

16-47 is my dynamic DHCP range .



-----------------------------------------------
Tks          |  BVance at sbm.com
BV           |  BobVance at alumni.caltech.edu
Sr. Tech. Consultant,    SBM
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Fax 770-623-3429         Duluth, GA 30097-1511
===============================================

-----Original Message-----
From: monier at ias.u-psud.fr [mailto:monier at ias.u-psud.fr]On Behalf Of
Nicolas Monier
Sent: Tuesday, January 30, 2001 12:04 PM
To: BVance at sbm.com
Subject: Re: reverse zone dynamic update problem


Good morning Bob Vance,

I tried to change the ddns-rev-domainname field
in my dhcpd.conf file (as you said me to do) and, now
it works well.
I upgraded my dhcpd version  and added the ddns-update-style keyword.

But you write that you mix static and dynamic addresses
in the same subnet. I know that bind9 refuse to
manage static and dynamic addresses in the same
zone . (In this case, bind9 notify a synchronisation conflict between
.jnl file and regular file when restarting named)

Do you have two zones for the same subnet???
Something like:
1.168.192.in-addr.arpa zone and
1.168.192.dynamic.in-addr.arpa zone ???


Nicolas Monier
Institut d'Astrophysique Spatiale d'Orsay