use Net::DNS; $rr = Net::DNS::RR->new( 'name NSEC nxtdname typelist' );
Use of undocumented package features or direct access to internal data structures is discouraged and could result in program termination or other unpredictable behaviour.
$nxtdname = $rr->nxtdname; $rr->nxtdname( $nxtdname );
The Next Domain field contains the next owner name (in the canonical ordering of the zone) that has authoritative data or contains a delegation point NS RRset.
@typelist = $rr->typelist; $typelist = $rr->typelist;
typelist() identifies the RRset types that exist at the NSEC RR owner name. When called in scalar context, the list is interpolated into a string.
$exists = $rr->typemap($rrtype);
typemap() returns a Boolean true value if the specified RRtype occurs in the type bitmap of the NSEC record.
$matched = $rr->match( 'example.foo' );
match() returns a Boolean true value if the canonical form of the name argument matches the canonical owner name of the NSEC RR.
$covered = $rr->covers( 'example.foo' );
covers() returns a Boolean true value if the canonical form of the name, or one of its ancestors, falls between the owner name and the nxtdname field of the NSEC record.
$encloser = $rr->encloser( 'example.foo' ); print "encloser: $encloser\n" if $encloser;
encloser() returns the name of a provable encloser of the query name argument obtained from the NSEC RR.
nextcloser() returns the next closer name, which is one label longer than the closest encloser. This is only valid after encloser() has returned a valid domain name.
wildcard() returns the unexpanded wildcard name from which the next closer name was possibly synthesised. This is only valid after encloser() has returned a valid domain name.
Portions Copyright (c)2018-2019 Dick Franks
All rights reserved.
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
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