ipv6 PTR in zone file

[Michel de Nostredame]

Hi BIND Users,

I am not sure if my post here is proper or not. If not please kindly
guide me to a correct list.

I have lot of "static" IPv6 address needs to add into DNS PTR record.
Most of them are server IP addresses and addresses on router
interfaces.
Compose proper PTR records, without human errors, is highly difficult
(compares to IPv4 PTR records), as we encode some customer information
into the address.

I tried to look into bit-string and soon realized it is already
removed from recent BIND versions. Then tried to search "$REVERSE" and
"$INVERSE" on Google but got no much luck; seems not much development
/ discussion recently.

For example, today we probably do PTR list this,

$ORIGIN 0.0.0.0.0.0.d.4.1.a.1.0.1.0.0.2.ip6.arpa.
1.0.1.a.0.0.0.5.6.0.c.1.0.0.5.6         PTR
xe-3-0-3-101.ar.par1.fr.netname.net.


What I am think about is if there is any potential possibility to
compose IPv6 PTR records in ZONE files in a little easier method?
something like

$ORIGIN $REVERSE(2001:01a1:4d00:0000).ip6.arpa.
$REVERSE(6500:1c06:5000:a101)          PTR
xe-3-0-3-101.ar.par1.fr.netname.net.


Thanks,
--
Michel~