[Kea-users] classless in-addr.arpa

[mike]

Hi,


    With isc dhcpd, I have been able to get essentially classless
in-addr.arpa  for my reverse dns, and I would like to do similar with
kea, but it seems that kea-dhcp-ddns has no support for classless
in-addr designations and is inflexible by not allowing me to specify my
own reverse zone for the updates over the burned in default of
'in-addr.arpa'.

    Under ISC dhcpd, you can get classless in-addr.arpa by telling it to
use a custom zone for reverse designations. In your stock in-addr.arpa
zones you then CNAME each possible host address to
reverse.ip.address.xxx.yourzone.com or somesuch.

    ISC DHCP allows you to specify a subnet declaration such as this:


subnet 100.127.224.0  netmask 255.255.240.0 {
        range 100.127.224.128 100.127.239.254;
        ddns-domainname "ops.example.com.";
        ddns-rev-domainname "224-239.127.100.dynamic-rev.example.com.";
        default-lease-time 60;
        max-lease-time 300;
        option broadcast-address 100.127.239.255;
        option routers 100.127.224.1;
        option domain-name "ops.example.com.";
        option domain-name-servers 1.1.1.1,2.2.2.2;
}


    When a reverse designation is made, it updates the zone
"224-239.127.100.dynamic-rev.example.com" with the reversed address of a
client, such as this:

169.228.127.100.224-239.127.100.dynamic-rev.example.com. 150 IN PTR
somehost.ops.example.com.

       Then, of course, I have 224.127.100.in-addr.arpa  thru
239.127.in-addr.arpa. CNAME'd over to corresponding records within with
zone '224-239.127.100.dynamic-rev.example.com'

    Although I am right now only using subnets larger than /24, and
could make kea work the way it was designed, I want to make sure it can
handle subnets of any size and so classless in-addr.arpa is what I need.
The trick used in the isc-dhcpd config could work for kea too, so my
question is, is there any way to get kea to update some zone other than
directly xxx.xxx.xxx.in-addr.arpa?


Mike-