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3741.	[func]		"delve" (domain entity lookup and validation engine):
			A new tool with dig-like semantics for performing DNS
			lookups, with internal DNSSEC validation, using the
			same resolver and validator logic as named. This
			allows easy validation of DNSSEC data in environments
			with untrustworthy resolvers, and assists with
			troubleshooting of DNSSEC problems. (Note: not yet
			available on win32.) [RT #32406]

			can be switched on by setting "dnssec-validation auto;"
			in the named.conf options. [RT #21727]

			ARM documentation about RFC 5011 support. [RT #19874]

			"dnssec-lookaside auto;"  This is the equivalent
			of "dnssec-lookaside . trust-anchor dlv.isc.org;"
			plus setting a trusted-key for dlv.isc.org.

			Note: The trusted key is hard-coded into named,
			but is also stored in (and can be overridden
			by) $sysconfdir/bind.keys.  As the ISC DLV key
			rolls over it can be kept up to date by replacing
			the bind.keys file with a key downloaded from
			https://www.isc.org/solutions/dlv. [RT #18685]

                        commands from bin/tests into bin/tools;
                        "make install" will put them in $sbindir. [RT #19301]