[PATCH 2/2] supplicant: Document passive_scan option for wpa_supplicant.conf

[greearb at candelatech.com]

From: Ben Greear <greearb at candelatech.com>

This should save the next person to need this behaviour some
time.

Signed-off-by: Ben Greear <greearb at candelatech.com>
---
 wpa_supplicant/wpa_supplicant.conf | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/wpa_supplicant/wpa_supplicant.conf b/wpa_supplicant/wpa_supplicant.conf
index 41c55ef..19979d0 100644
--- a/wpa_supplicant/wpa_supplicant.conf
+++ b/wpa_supplicant/wpa_supplicant.conf
@@ -118,6 +118,14 @@ eapol_version=1
 # networks are found, a new IBSS or AP mode network is created.
 ap_scan=1
 
+# Normal scans will do probe requests, which advertise the local station
+# to the world.  Normally this is fine, but users may wish to do passive
+# scanning where the radio should only listen quietly for beacons and not
+# do any probe requests.  Actual functionality may be driver dependent.
+# 0:  Do normal scans (default)
+# 1:  Do passive scans.
+#passive_scan=0
+
 # MPM residency
 # By default, wpa_supplicant implements the mesh peering manager (MPM) for an
 # open mesh. However, if the driver can implement the MPM, you may set this to
-- 
1.9.3