From: Mark Andrews <marka@isc.org>
Date: Thu, 9 Apr 2026 02:07:11 +0000 (+1000)
Subject: [9.18] fix: doc: nsupdate does not handle zero length RDATA well
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=95afb0f5b575f690710ef72fca7ddccc8a95f22c;p=thirdparty%2Fbind9.git

[9.18] fix: doc: nsupdate does not handle zero length RDATA well

Nsupdate does not distinguish between a non-existing RDATA field
and an empty RDATA field when determining which action is desired
when the RDATA field is empty. This only affects a few data types,
like APL, which allow an empty RDATA field.  Document a workaround
of using the '\# 0' form for entering these specific records. e.g.

    # delete the APL RRset
    update delete IN APL
    # delete the APL record with a zero length rdata
    update delete IN APL \# 0

Closes #5835

Backport of MR !11775

Merge branch 'backport-5835-nsupdate-doc-zero-length-rdata-how-to-9.18' into 'bind-9.18'

See merge request isc-projects/bind9!11824
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