diff --git a/bin/delv/delv.1 b/bin/delv/delv.1
index bb2f82c841..9f3d22e1b2 100644
--- a/bin/delv/delv.1
+++ b/bin/delv/delv.1
@@ -421,6 +421,11 @@ must be used to specify a file containing the DLV key\&.
 .RS 4
 Controls whether to use TCP when sending queries\&. The default is to use UDP unless a truncated response has been received\&.
 .RE
+.PP
+\fB+[no]unknownformat\fR
+.RS 4
+Print all RDATA in unknown RR type presentation format (RFC 3597)\&. The default is to print RDATA for known types in the type\*(Aqs presentation format\&.
+.RE
 .SH "FILES"
 .PP
 /etc/bind\&.keys
@@ -440,5 +445,5 @@ RFC5155\&.
 \fBInternet Systems Consortium, Inc\&.\fR
 .SH "COPYRIGHT"
 .br
-Copyright \(co 2014, 2015 Internet Systems Consortium, Inc. ("ISC")
+Copyright \(co 2014-2016 Internet Systems Consortium, Inc. ("ISC")
 .br
diff --git a/bin/delv/delv.html b/bin/delv/delv.html
index ae1e107509..293afd3caf 100644
--- a/bin/delv/delv.html
+++ b/bin/delv/delv.html
@@ -446,6 +446,12 @@
 	      The default is to use UDP unless a truncated
 	      response has been received.
 	    </p></dd>
+<dt><span class="term"><code class="option">+[no]unknownformat</code></span></dt>
+<dd><p>
+	      Print all RDATA in unknown RR type presentation format
+	      (RFC 3597). The default is to print RDATA for known types
+	      in the type's presentation format.
+	    </p></dd>
 </dl></div>
 <p>
 
diff --git a/bin/dig/dig.1 b/bin/dig/dig.1
index 2053d57096..152e4075b7 100644
--- a/bin/dig/dig.1
+++ b/bin/dig/dig.1
@@ -688,6 +688,11 @@ Display [do not display] the TTL when printing the record\&.
 Display [do not display] the TTL in friendly human\-readable time units of "s", "m", "h", "d", and "w", representing seconds, minutes, hours, days and weeks\&. Implies +ttlid\&.
 .RE
 .PP
+\fB+[no]unknownformat\fR
+.RS 4
+Print all RDATA in unknown RR type presentation format (RFC 3597)\&. The default is to print RDATA for known types in the type\*(Aqs presentation format\&.
+.RE
+.PP
 \fB+[no]vc\fR
 .RS 4
 Use [do not use] TCP when querying name servers\&. This alternate syntax to
diff --git a/bin/dig/dig.html b/bin/dig/dig.html
index 47d24f05f2..39235f49e3 100644
--- a/bin/dig/dig.html
+++ b/bin/dig/dig.html
@@ -713,6 +713,12 @@
 	      time units of "s", "m", "h", "d", and "w", representing
 	      seconds, minutes, hours, days and weeks.  Implies +ttlid.
 	    </p></dd>
+<dt><span class="term"><code class="option">+[no]unknownformat</code></span></dt>
+<dd><p>
+	      Print all RDATA in unknown RR type presentation format
+	      (RFC 3597). The default is to print RDATA for known types
+	      in the type's presentation format.
+	    </p></dd>
 <dt><span class="term"><code class="option">+[no]vc</code></span></dt>
 <dd><p>
 	      Use [do not use] TCP when querying name servers.  This
diff --git a/bin/tools/mdig.1 b/bin/tools/mdig.1
index 6f3b3840c5..853665eb8c 100644
--- a/bin/tools/mdig.1
+++ b/bin/tools/mdig.1
@@ -383,6 +383,11 @@ is less than or equal to zero, the number of tries is silently rounded up to 1\&
 Sets the timeout between UDP query retries\&.
 .RE
 .PP
+\fB+[no]unknownformat\fR
+.RS 4
+Print all RDATA in unknown RR type presentation format (RFC 3597)\&. The default is to print RDATA for known types in the type\*(Aqs presentation format\&.
+.RE
+.PP
 \fB+[no]zflag\fR
 .RS 4
 Set [do not set] the last unassigned DNS header flag in a DNS query\&. This flag is off by default\&.
diff --git a/bin/tools/mdig.html b/bin/tools/mdig.html
index e66ffcb48e..e8159e5bad 100644
--- a/bin/tools/mdig.html
+++ b/bin/tools/mdig.html
@@ -407,6 +407,12 @@
 <dd><p>
               Sets the timeout between UDP query retries.
             </p></dd>
+<dt><span class="term"><code class="option">+[no]unknownformat</code></span></dt>
+<dd><p>
+	      Print all RDATA in unknown RR type presentation format
+	      (RFC 3597). The default is to print RDATA for known types
+	      in the type's presentation format.
+	    </p></dd>
 <dt><span class="term"><code class="option">+[no]zflag</code></span></dt>
 <dd><p>
               Set [do not set] the last unassigned DNS header flag in a
diff --git a/doc/arm/man.delv.html b/doc/arm/man.delv.html
index 27e1914b3a..04f112abd2 100644
--- a/doc/arm/man.delv.html
+++ b/doc/arm/man.delv.html
@@ -464,6 +464,12 @@
 	      The default is to use UDP unless a truncated
 	      response has been received.
 	    </p></dd>
+<dt><span class="term"><code class="option">+[no]unknownformat</code></span></dt>
+<dd><p>
+	      Print all RDATA in unknown RR type presentation format
+	      (RFC 3597). The default is to print RDATA for known types
+	      in the type's presentation format.
+	    </p></dd>
 </dl></div>
 <p>
 
diff --git a/doc/arm/man.dig.html b/doc/arm/man.dig.html
index df0cba4da3..e3f782e657 100644
--- a/doc/arm/man.dig.html
+++ b/doc/arm/man.dig.html
@@ -731,6 +731,12 @@
 	      time units of "s", "m", "h", "d", and "w", representing
 	      seconds, minutes, hours, days and weeks.  Implies +ttlid.
 	    </p></dd>
+<dt><span class="term"><code class="option">+[no]unknownformat</code></span></dt>
+<dd><p>
+	      Print all RDATA in unknown RR type presentation format
+	      (RFC 3597). The default is to print RDATA for known types
+	      in the type's presentation format.
+	    </p></dd>
 <dt><span class="term"><code class="option">+[no]vc</code></span></dt>
 <dd><p>
 	      Use [do not use] TCP when querying name servers.  This