From: Vincent Bernat <bernat@luffy.cx>
Date: Thu, 11 Jul 2013 22:44:56 +0000 (+0200)
Subject: README: show how to use tcpdump for troubleshooting
X-Git-Tag: 0.7.6~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=22f1ea467ef944c512d9be2e18d1352eb314b01b;p=thirdparty%2Flldpd.git

README: show how to use tcpdump for troubleshooting
---

diff --git a/README.md b/README.md
index cff76216..f2656e3e 100644
--- a/README.md
+++ b/README.md
@@ -188,6 +188,14 @@ To embed lldpd into an existing system, there are two point of entries:
     should always be shipped with `lldpd`. On the other hand, programs
     using `liblldpctl.so` can rely on the classic ABI rules.
 
+Troubleshooting
+---------------
+
+You can use `tcpdump` to look after the packets received and send by
+`lldpd`. To look after LLDPU, use:
+
+    tcpdump -s0 -vv -pni eth0 ether dst 01:80:c2:00:00:0e
+
 License
 -------