diff --git a/presentation/presentation.tex b/presentation/presentation.tex
index 3b755c0..e83eab1 100644
--- a/presentation/presentation.tex
+++ b/presentation/presentation.tex
@@ -148,6 +148,7 @@ Lowlevel: C, Arduino Studio
 Linux
 \begin{itemize}
 	\item Debian, Gentoo (testing): \texttt{\{apt install,emerge\} esptool picocom}
+	\item Ubuntu: \texttt{pip3 install esptool \&\& apt install picocom}
 	\item \texttt{adduser \$USER dialout}
 	\item neuer Login (sudo su \$USER)
 	%\item Alternative: Docker (bin/docker): \textit{docker-compose run esp esptool}
@@ -266,19 +267,21 @@ setup()
 \begin{lstlisting}[caption={C\&C Server},label=cnc]
 from flask import Flask, request
 app = Flask(__name__)
+app.debug = True
 @app.route("/")
 def hello():
 	return "Hello ESP8266!"
 @app.route("/id/<id:id>", methods=['GET','POST'])
 def log(id):
 	app.logger.info("%s was here and delivered '%s'", id, request.data.decode("utf8"))
+	return "You were here!"
 \end{lstlisting}
 Starten:
 \begin{itemize}
 	\item[!] pip install Flask
 	\item python server.py
 	\item[||] docker-compose up (server.py in src/)
-	\item[||] FLASK\_APP=server.py flask run
+	\item[||] FLASK\_APP=server.py flask run --host 0.0.0.0
 \end{itemize}
 \end{frame}