PTR delegation 16 IPs

[Marc Lampo]

>

Hallo Christian,

observe that there is no delegation for the reverse map of 193.100.177.32/28 !
Following the link down from ns.ripe.net, one notices :
100.193.in-addr.arpa. is delegated to auth00.ns.de.uu.net.
However, in the zonefile (dig @auth00.ns.de.uu.net axfr 100.193.in-addr.arpa)
there is nothing about 32/28.177.100.193... (nor 32-28... for that matter).
What can be observed is that a couple of delegations to subnets has been done in
the "old fashioned way".  Prior to the official RFC about classless reverse
resolving, the original proposal did not mention anything about the bit-length.
In this particular zonefile you can observe such delegations :
192.177.100.193.IN-ADDR.ARPA.   86400   NS  auth52.ns.de.uu.net.
192.177.100.193.IN-ADDR.ARPA.   86400   NS  auth02.ns.de.uu.net.
212.177.100.193.IN-ADDR.ARPA.   86400   CNAME   212.192...
...

I'd say contact hostmaster at de.uu.net to ask for the delegation and the CNAMES in
their zone.

Success,

Marc Lampo

>
> well, our german division also has 16 adresses only: 193.100.177.32/28
> I tried both forms, zone is loaded, the (new created) files.rev on the
> secondary do show all nodes, but an 'arp -a' cannot resolve to names.
> Now running as 'full' C-network, also defining only our 16 adresses works.
> Files.rev looks nearly the same, only $ORIGIN ... is changed.
> ? is this an 'arp' problem or were should I look ?
>
> best regards
> Christian Krackowizer
>
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--
Security Engineer for C-CURE CBVA, Belgium (http://www.c-cure.be/)
Guest teacher of "Client-Server Programming with Unix"
for AT Computing, Nijmegen, The Netherlands
(http://www.atcomputing.nl/ - Dutch spoken)