RFC1101, network info in DNS. Usefull ?

[Bill Manning]

 pretty much been superseded by RFC 2317

% 
% 
% Hello,
% 
% could somebody comment on the usefulness of RFC1101, network info in
% DNS.
% It looks promising to me, but I guess it fails when variable length
% subnets are used.
% 
% If I understand it correctly, an A-RR is put in the reverse map on the
% "network level".
% Like :
% 0.0.168.192.in-addr.arpa.  A  255.255.255.192  ; /26
% This learns that there are 4 subnets :
% 192.168.0.0/26, ...0.64/26, ...0.128/26 and ...0.192/26
% 
% I see no immediate problem when the last three are further subnetted
% (there is no
% A-record yet), but suppose the first subnet is further divided into
% :...0.0/27 and 0.32/27.
% This would imply a second A-RR, wouldn't it ?
% 0.0.168.192.in-addr.arpa.  A  255.255.255.224
% 
% The "complicated, subnetted example" from RFC1101 shows subnets of
% subnets as well,
% but not of the first subnet.
% 
% I'm just guessing that, however potentially interesting it may be,
% this RFC is little or not followed at all ?
% 
% Greetings,
% 
% Marc Lampo
% 
% -- --
% Security Engineer for C-CURE CBVA, Belgium
% Guest teacher of Client/Server Programming @ AT Computing (Dutch only)
% Opionions are strictly personal and do not commit either company
% 
% 
% 
% 
% 


-- 
--bill