From 94d9ad22d02485b4aae487b33f4f4873a702608e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Petazzoni?= <jerome.petazzoni@gmail.com>
Date: Tue, 11 Jul 2017 19:51:00 +0200
Subject: [PATCH] Add ngrep details when using PWD or Vagrant re/ interface
 selection (closes #84)

---
 docs/index.html | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/docs/index.html b/docs/index.html
index 61dd2b9f..3e1d8cfc 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -4078,6 +4078,20 @@ When you do the `curl`, you should see the HTTP request in clear text in the out
 
 ---
 
+class: ipsec, extra-details
+
+## If you are using Play-With-Docker, Vagrant, etc.
+
+- You will probably have *two* network interfaces
+
+- One interface will be used for outbound traffic (to Google)
+
+- The other one will be used for internode traffic
+
+- You might have to adapt/relaunch the `ngrep` command to specify the right one!
+
+---
+
 class: ipsec
 
 ## Try to sniff traffic across overlay networks