Merge branch 'u/fanf2/rndc-validation-status-noflush' into 'master'

Do not flush the cache for `rndc validation status`

See merge request !2462

CHANGES

+5312.	[bug]		Do not flush the cache for `rndc validation status`.
+			Thanks to Tony Finch. [GL !2462]
+
 5311.	[cleanup]	Include all views in output of `rndc validation status`.
 			Thanks to Tony Finch. [GL !2461]
 

bin/named/server.c

@@ -11081,9 +11081,9 @@ named_server_validation(named_server_t *server, isc_lex_t *lex,
 		if ((ptr != NULL && strcasecmp(ptr, view->name) != 0)
 		    || strcasecmp("_bind", view->name) == 0)
 			continue;
-		CHECK(dns_view_flushcache(view, false));
 
 		if (set) {
+			CHECK(dns_view_flushcache(view, false));
 			view->enablevalidation = enable;
 			changed = true;
 		} else {

bin/rndc/rndc.docbook

@@ -1078,6 +1078,8 @@
 	  <para>
 	    Enable, disable, or check the current status of
 	    DNSSEC validation.  By default, validation is enabled.
+	    The cache is flushed when validation is turned on or off
+	    to avoid using data that might differ between states.
 	  </para>
 	</listitem>
       </varlistentry>