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Transfer & Outreach

Open Source Software

The Internet Technologies research group is founder and co-founder of several successful open source projects such as RIOT and RTRlib. We also contribute to other open source software, to improve Internet communication


The RTRlib is a lightweight, open-source C library that implements the RPKI/RTR protocol. Basically, it fetches data from an RPKI cache server and allows for prefix origin validation as well as BGP path validation. The RTRlib is the backend for BGP daemons and monitoring tools.


aiodnsprox is a DNS proxy that supports a variety of DNS transports. On the proxy side, aiodnsprox supports DNS over UDP and DNS over TCP. On the server side, it supports DNS over DTLS and DNS over CoAP. aiodnsprox is based on Python.


Free Range Routing is a fork of Quagga, and one of the most popular BGP daemons. We contributed to RPKI support in FRR and other BGP daemons.


RPKI MIRO is a monitoring application that consists of three parts: (i) standard functions to collect RPKI data from remote repositories, (ii) a browser to visualize RPKI objects, and (iii) statistical analysis of the collected objects. The main objective of RPKI MIRO is to give you extensive but painless insight into the published RPKI content.


RIOT is the friendly operating system for the Internet of Things. It powers the Internet of Things like Linux powers the Internet. RIOT is a free, open source operating system developed by a grassroots community gathering companies, academia, and hobbyists, distributed all around the world.

Internet Standardization

The Internet Engineering Task Force (IETF) and the Internet Research Task Force (IRTF) are pivotal for open Internet protocols, applications, and services. A Request for Comments (RFC) contains technical and organizational content about the Internet, including the specification of protocols (e.g., HTTP) and policies. Below you find a list of RFCs we are involved in. All RFCs below are part of the publication stream of the IETF or IRTF. They have undergone a thorough peer-review process before they were published.

A complete list of IETF/IRTF documents, including recent drafts, we contributed to is available on http://ilab-pub.imp.fu-berlin.de/id.html.

RFC 9139

Information-Centric Networking (ICN) Adaptation to Low-Power Wireless Personal Area Networks (LoWPANs)

RFC 8076

A Usage for Shared Resources in RELOAD (ShaRe)

RFC 7927

Information-Centric Networking (ICN) Research Challenges

RFC 7411

Multicast Listener Extensions for Mobile IPv6 (MIPv6) and Proxy Mobile IPv6 (PMIPv6) Fast Handovers

RFC 7287

Mobile Multicast Sender Support in Proxy Mobile IPv6 (PMIPv6) Domains

RFC 7128

Resource Public Key Infrastructure (RPKI) Router Implementation Report

RFC 7046

A Common API for Transparent Hybrid Multicast,

RFC 6224

Base Deployment for Multicast Listener Support in Proxy Mobile IPv6 (PMIPv6) Domains

RFC 5757

Multicast Mobility in Mobile IP Version 6 (MIPv6): Problem Statement and Brief Survey

Engagement with Network Operator Community

The Internet Technologies group aims for making its research results available to network operators, hoping that this will help to improve the Internet a little bit. Below you find a selection of talks and blog posts.

We gratefully acknowledge all the support, such as RIPE RACI, that allows us to present our research to the network operator community.



Marcin Nawrocki, Plenary, The Sad Reality of QUIC Handshakes


Marcin Nawrocki, Conference, Transparent Forwarders: An Unnoticed Component of the Open DNS


Pouyan Tehrani, Plenary, Security of Alerting Authorities in the WWW: Measuring Namespaces, DNSSEC, and Web PKI


Clemens Mosig, Plenary, Revisiting Recommended BGP Route Flap Dampening Configurations

Salottino 2020@MIX

Marcin Nawrocki, Down the Black Hole: Dismantling Operational Practices of BGP Blackholing at IXPs


Clemens Mosig, Plenary, Route Flap Damping in the Wild


Marcin Nawrocki, Connect Working Group, Dismantling Operational Practices of BGP Blackholing at IXPs


Andreas Reuter, Plenary, Measuring the Adoption of RPKI Route Origin Validation: Update


Andreas Reuter, Plenary, Measuring Adoption of RPKI Route Validation and Filtering
Andreas Reuter, Open Source WG, RPKI MIRO & RTRLIB


We are aware of the impact of cultural bias. We also know that there is no silver bullet to overcome the negative side of such bias.

Our research group tries to improve the situation by first and foremost being aware of the problem. Based on this awareness, we implement direct actions such as establishing a welcoming culture that reflects diversity, justify our decisions transparently, and solicit feedback from those we interact with.

We engage in multiple activities such as Jugend hackt or Networking Networking Women events (e.g., IEEE LCN 2019, IRTF Diversity Travel Grant).

PhD student Martine Lenders organized the N2Women (Networking Networking Women) at IEEE LCN 2019

PhD student Martine Lenders organized the N2Women (Networking Networking Women) at IEEE LCN 2019
Image Credit: Fabian Marquard, IEEE LCN 2019


It is important to inform the public based on scientific insights and sound background knowledge. We contribute to this as an expert for media such as ZEIT, Süddeutsche Zeitung, and Deutsche Welle.



  • Internetausfall: Kann es nicht nur Facebook, sondern alles ..., Süddeutsche Zeitung, 28.10.2021

  • Mangelnde Digitalisierung im Katastrophenschutz,WirtschaftsWoche, 09.08.2021

  • Glasfaser mitHemmschuh. BerlinerWissenschaftsnetz Brain, Süddeutsche Zeitung, 06.04.2021

  • Revolte im Internet der Dinge, Tagesspiegel, 29.04.2019

  • When hunger for fast Internet collides with U.S. concerns about Chinese spying, The Washington Post, April 23, 2019

  • Hackerangriffe.WarumBürger auf die Zeit ohne Smartphone vorbereitet sein sollten, Berliner Zeitung, February 21, 2019

  • Beat the Prof.Wie funktioniert das Internet?, ZEIT, October 26, 2018

  • We need a new internet, Science Node, August 09, 2017

  • Digitale Vandalen, Frankfurter Rundschau, June 28, 2017

  • Vandalen im Netz. Der jüngste weltweiteAngriff auf Firmencomputer soll offenbar vor allem Chaos verbreiten, Berliner Zeitung, June 29, 2017

  • Cyber-Attacke. Digitale Dilettanten, Frankfurter Rundschau,May 16, 2017

  • In France, a hack falls flat, TheWashington Post,May 8, 2017

  • Zahlen oder nicht? Wie Firmen mit Cyber-Erpressung umgehen sollten, Berliner Zeitung,15.05.2017

  • Arbeitspferdchen. IoT-Betriebssystem RIOT, c’t, number 17, August 2016

  • Internet Society Attracts RecordNumber of Students to IETF 87, IETF Journal, October 2013

  • RPKI: Angst vor einem Staatshack, heise online, 05.08.2013

  • Experten antworten. Zum Thema Bin Raiding, Schwäbische Zeitung, 06.12.2011

  • Web-Überwachung: Neues Internet-Protokoll erschwert anonymes Surfen, SPIEGEL ONLINE, 18.11.2010

  • Internetangriff: US-Kommission wirft China Datenentführung vor, SPIEGELONLINE,17.11.2010


  • Digitaler Blackout. Wenn dieWelt plötzlich offline ist, Zeitfragen, Deutschlandfunk Kultur, 20.09.2018

  • RIOT soll das offene Betriebssystem für das IoT werden, Computer und Kommunikation, Deutschlandfunk, 20.05.2017

  • Safest – Neue Sicherheit für Menschenmengen?, Logo – Das Wissenschaftsmagazin, NDR Info, 14.03.2014

  • Wer im Internet wohnt. Per Botnet zählen Hacker das Internet aus – natürlich illegal, Breitband – Medien und digitale Kultur, Deutschlandradio Kultur, 30.03.2013

  • GefährlicheNummer –Virenschutz fürsSmartphone, ElektronischeWelten, Deutschlandradio Kultur, 18.09.2012

  • Immunsystem fürSmartphone,Wissenswerte: Forschung im Gespräch, rbb Inforadio, 22.12.2011

  • Schadsoftware auf dem Smartphone –Wie wir unsere Minicomputer vor Viren und Trojanern schützen können,Wissenschaftssendung Leonardo, WDR 5 – Hörfunk, 07.12.2011


  • Living in the Digital Age, Shift, Deutsche Welle, 06.10.2019 (translated in multiple languages) Digitaler Einbruch insSmartHome, Projekt Zukunft–DasWissenschaftsmagazin, Deutsche Welle, 08.03.2019

  • Bin Raiding, hallo deutschland, ZDF, 05.01.2012

  • Bin Raiding: Die unterschätzte Gefahr, WISO, ZDF, 28.11.2011

Research Papers Discussed in the Press (w/o Explicit Interview)

  • Industrial control systems are still vulnerable to malicious cyberattacks, MIT Technology Review, January 28, 2019

  • RIPE-Arbeitsgruppe für das Internet der Dinge. Dinglichkeit, iX, September 2018

  • How the Internet of Things could become a critical part of disaster response,www.itworld.com, July 22, 2014

  • How the Internet of Things Could Aid Disaster Response, shlasdot.org, July 24, 2014