From 8894e213e57cf83dd7eb55b38604c679e0dd0119 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Sun, 3 Aug 2014 08:07:35 +0200
Subject: [PATCH] README: Add notes about netlink monitoring requirements

---
 README | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/README b/README
index be6e6dec..896abf07 100644
--- a/README
+++ b/README
@@ -74,3 +74,20 @@ and it can be verified with the busctl utility from systemd:
 	:1.2     62153  busctl      root      :1.2          sd-busctl
 
 Clients talking to the daemon must specifiy the private bus address.
+
+
+Netlink monitoring
+==================
+
+The included iwmon utility can be used to monitor the 802.11 subsystem
+generic netlink commands and events. It uses the nlmon kernel driver
+from Linux 3.10 and later.
+
+In order to use iwmon to create traces, the nlmon network interface
+needs to be created:
+
+	ip link add name nlmon type nlmon
+	ip link set dev nlmon up
+
+For now it is important that the netlink monitor interace is actually
+named nlmon. Future version might relax this requirement.