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+# Netem Tool
+
+This tool uses the 3-way TCP handshake to measure the real RTT of a TCP connection.
+
+### Usage
+
+Run TCP SYN/ACK probes to measure round-trip-time (RTT):
+
+    ./netem probe 8.8.8.8 > probing.dat
+
+The output of this command and be stored in a file or directly passed to the `emulate` subcommand:
+
+    ./netem probe 8.8.8.8 | ./netem emulate
+    ./netem emulate < probing.dat
+
+### Building
+
+##### Install libnl
+
+git submodule init
+git submodule update
+
+cd libnl/
+autreconf -i
+./configure
+make
+make install
+
+##### Install netem
+
+Just run `make`.
+
+### Dependencies
+
+- [libnl3](http://www.infradead.org/~tgr/libnl/) (3.2.26)
+- recent Linux Kernel version
+
+For building libnl (make libnl)
+
+- libtool
+- bison
+- flex
+- autotools
+
+### See also
+
+- http://www.infradead.org/~tgr/libnl/
+- https://www.kernel.org/doc/Documentation/networking/timestamping.txt
+- [tc-netem(8)](http://man7.org/linux/man-pages/man8/tc-netem.8.html)
+
+### Author
+
+Steffen Vogel <post@steffenvogel.de>
+
+This tool was developed as a project for the Network Programming Laboratory of the Institute for Networked Systems, RWTH Aachen University, in summer 2015.
+
+### License
+
+Copyright (C) 2015 Steffen Vogel
+
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.
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