diff -up ./nss/doc/certutil.xml.add_ipsec_usage ./nss/doc/certutil.xml
--- ./nss/doc/certutil.xml.add_ipsec_usage	2019-06-05 09:40:37.848895763 -0700
+++ ./nss/doc/certutil.xml	2019-06-05 09:40:47.079891058 -0700
@@ -428,6 +428,9 @@ of the attribute codes:
 	<listitem>
 <para><command>J</command> (as an object signer)</para>
 	</listitem>
+	<listitem>
+<para><command>I</command> (as an IPSEC user)</para>
+	</listitem>
 	</itemizedlist></listitem>
       </varlistentry>