Update the ifconfig(8) man page to state that the wpa option is
implied when the wpaakms option is set. 

Changed in ifconfig.c revision 1.354.

Index: ifconfig.8
===================================================================
RCS file: /cvs/src/sbin/ifconfig/ifconfig.8,v
retrieving revision 1.292
diff -u -p -u -p -r1.292 ifconfig.8
--- ifconfig.8  16 Jan 2018 10:33:55 -0000      1.292
+++ ifconfig.8  5 Feb 2018 01:07:30 -0000
@@ -963,13 +963,20 @@ In Host AP mode, this will dump the list
 Enable Wi-Fi Protected Access.
 WPA is a Wi-Fi Alliance protocol based on the IEEE 802.11i standard.
 It was designed to enhance the security of wireless networks.
+Setting the
+.Cm wpaakms
+option implies enable WPA.
 Notice that not all drivers support WPA.
 Check the driver's manual page to know if this option is supported.
 .It Cm -wpa
 Disable Wi-Fi Protected Access.
 .It Cm wpaakms Ar akm,akm,...
 Set the comma-separated list of allowed authentication and key management
-protocols.
+protocols. The
+.Cm wpa
+option is implied and is not required when the 
+.Cm wpaakms
+option is set.
 .Pp
 The supported values are
 .Dq psk

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