diff --git a/release/doc/en_US.ISO8859-1/relnotes/article.xml b/release/doc/en_US.ISO8859-1/relnotes/article.xml
index 34ed1df48611..6ca465c17043 100644
--- a/release/doc/en_US.ISO8859-1/relnotes/article.xml
+++ b/release/doc/en_US.ISO8859-1/relnotes/article.xml
@@ -403,9 +403,20 @@
 	<application>Clang</application> have been updated to
 	version 3.4.</para>
 
-      <para revision="266527"
-	role="merged"><application>Sendmail</application> has been
-	updated from 8.14.7 to 8.14.9.</para>
+      <para revision="285229"><application>sendmail</application>
+	has been updated to 8.15.2.  Starting with FreeBSD 11.0 and
+	sendmail 8.15, sendmail uses uncompressed IPv6 addresses by
+	default, i.e., they will not contain "::".  For example,
+	instead of ::1, it will be 0:0:0:0:0:0:0:1.  This permits a
+	zero subnet to have a more specific match, such as different
+	map entries for IPv6:0:0 vs IPv6:0.  This change requires that
+	configuration data (including maps, files, classes, custom
+	ruleset, etc.) must use the same format, so make certain such
+	configuration data is upgrading.  As a very simple check
+	search for patterns like 'IPv6:[0-9a-fA-F:]*::' and 'IPv6::'.
+	To return to the old behavior, set the m4 option
+	confUSE_COMPRESSED_IPV6_ADDRESSES or the cf option
+	UseCompressedIPv6Addresses.</para>
 
       <para revision="276577"><application>file</application> has been
 	updated to version 5.22.</para>