Dnstap io, note that it creates a thread when possible.
@@ -2116,6 +2116,10 @@ re-establish a new connection later.
This option defaults to 100 milliseconds.
.SS DNSTAP Logging Options
DNSTAP support, when compiled in, is enabled in the \fBdnstap:\fR section.
+This starts an extra thread (when compiled with threading) that writes
+the log information to the destination. If unbound is compiled without
+threading it does not spawn a thread, but connects per-process to the
+destination.
.TP
.B dnstap-enable: \fI<yes or no>
If dnstap is enabled. Default no. If yes, it connects to the dnstap server
