A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : DNSSEC Wildcard optimization
Author(s) : O. Kolkman et al.
Filename : draft-olaf-dnsext-dnssec-wildcard-optimization-01.txt
Pages : 13
Date : 2002-11-7
Secure denial of the existence of wildcards may lead to a large
number of NXT RRs and associated SIG RRs in DNS responses, even in
the common case when wildcards are not present in the zone. This
optimization uses one bit from the NXT type array to signal that
there is no closer wildcard in the zone for a given query name. This
reduces the packet size and the need for executing slow, and
complicated, code paths in common queries. In cases where there are
no wildcard RRs in the zone (i.e. te root zone) only one NXT RR and
corresponding SIG is needed for denial of existence of the wildcard.
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