added example VNFs for emulator (not finally tested)
diff --git a/misc/vnfs/tcpdump/Dockerfile b/misc/vnfs/tcpdump/Dockerfile
new file mode 100644
index 0000000..e14570f
--- /dev/null
+++ b/misc/vnfs/tcpdump/Dockerfile
@@ -0,0 +1,16 @@
+FROM ubuntu
+MAINTAINER iMinds
+
+RUN apt-get update && apt-get install -y \
+ tcpdump
+
+RUN mv /usr/sbin/tcpdump /usr/bin/tcpdump
+
+ADD start.sh start.sh
+RUN chmod +x start.sh
+
+# emulator specific entrypoint
+ENV SON_EMU_CMD ./start.sh
+
+# always use bash as defauld command
+CMD /bin/bash
\ No newline at end of file
diff --git a/misc/vnfs/tcpdump/start.sh b/misc/vnfs/tcpdump/start.sh
new file mode 100644
index 0000000..e3ffe66
--- /dev/null
+++ b/misc/vnfs/tcpdump/start.sh
@@ -0,0 +1,7 @@
+#! /bin/bash
+
+#This gives time to the Dockernet to configure the network namespace of the container
+sleep 3
+
+
+echo "Traffic sink started"
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