diff --git a/handbook/firewalls.sgml b/handbook/firewalls.sgml
index e8a94354f0..06edc6181e 100644
--- a/handbook/firewalls.sgml
+++ b/handbook/firewalls.sgml
@@ -1,4 +1,4 @@
-<!-- $Id: firewalls.sgml,v 1.20 1998-04-08 11:52:40 cracauer Exp $ -->
+<!-- $Id: firewalls.sgml,v 1.21 1999-01-21 23:39:51 alex Exp $ -->
 <!-- The FreeBSD Documentation Project -->
 
 <sect><heading>Firewalls<label id="firewalls"></heading>
@@ -333,10 +333,13 @@ by a leading '!'.
 <tag/icmptypes <em>types</em>/Matches if the ICMP type is present in
 the list <em>types</em>.  The list may be specified as any combination
 of ranges and/or individual types separated by commas.  Commonly used
-ICMP types are: <bf>0</bf> echo reply (ping reply), <bf>5</bf>
-redirect, <bf>8</bf> echo request (ping request), and <bf>11</bf>
-time exceeded (used to indicate TTL expiration as with
-<tt>traceroute(8)</tt>).
+ICMP types are:
+<bf>0</bf> echo reply (ping reply),
+<bf>3</bf> destination unreachable,
+<bf>5</bf> redirect,
+<bf>8</bf> echo request (ping request), and
+<bf>11</bf> time exceeded (used to indicate TTL
+expiration as with <tt>traceroute(8)</tt>).
 
 </descrip>