Table of Contents


Format and topic of talks {menukeys} We welcome proposals of anything you think may be of interest to mesh routing and community networking enthusiasts. Format is very flexible: presentation, talk, discussion, debate, practical workshop, or film screening. The default slot length is one hour (40 minutes talk + 10 minutes questions + 10 minutes break until next one). Lightning talks are short talks which can be put in the program during the event, it's the perfect opportunity to present fresh projects/ideas. They are limited to 10 minutes followed by 5 minutes of questions.

To enter a proposal, please add it directly to the schedule below. This list is editable without creating an account, by just clicking the “Edit this tab link” on the right. In case self-editing fails for some reason, please put your proposal into a short mail to organizers at with the details.


Live Stream

Stream is live at c-base

Monday - May 7th

Time/Duration Name/Title Location Done by Presentation/notes
11:00 Doors open
12:00-13:00 Welcome and Ice Breaker Mainhall Monic
13:00-14:00 Lunch Mainhall
14:00-15:00 Start of the “Battle of the Mesh Protocols” (Measurement Campaign) Mainhall Paul
19:00 Welcome Dinner Mainhall
23:42 c-base shutdown Last trains soon after

Tuesday - May 8th

Time/Duration Name/Title Location Done by Presentation/notes
11:00 Doors open
12:00-13:00 Grand OpeningMain Hall Monic, Paul, Filipe Be there or be square!
13:00-14:00 Lunch Mainhall
14:00-14:15 NexMesh - the first mesh network mined cryptocurrencyMain Hall Tom Calvert
14:00-18:00 Freifunk in der Schule und OER Ceminar room Bernd (JSFB), Monic Detailinfos und Ablauf
18:15-18:45 cryptdomainmgr automates certs, TLSA, DKIM and many more Stefan (Chaostreff Chemnitz) Repo:
19:00 Turkish Buffet Mainhall
23:42 c-base shutdown Last trains soon after

Wednesday - May 9th

Time/Duration Name/Title Location Done by Presentation/notes
11:00 Doors open
10:45 - 11:30 Technik Museum Guided Tour Foyer/Eingang Ladestraße. 10 minutes walk from Station “U2 Gleisdreieck” or “U1/U3/U7 Möckernbrücke” Curator and Elektra Learn about Freifunk History and have a tour through the exhibition “The Net”. Entrance Fee 5 EUR
13:00-14:00 Lunch Mainhall
14:30-15:00 Savemom - Using Wireless Mesh to provide healthcare to pregnant women in villagesMain Hall Senthil kumar Presentation slides available here.
15:15 - 16:30 Network self-organization Main Hall Bruno, Thiago How do community networks sprout? Coolab shares its experience in fostering CNs in Brazil. Come share your experiences and insights too. Bonus: installing a captive portal with voucher system in Libremesh
16:30 - 17:00 Poprouting applied to WCN Main Hall Gabriele Gemmi Discover what's Poprouting and learn how to implement it in your WCN using PRINCE
17:00 - 17:30 TubeChat Main Hall Nina Tumanishvili A short-range social messaging/gaming app, connecting users in areas with low connectivity looking for collaborators
17:30 - 18:00 OpenWrt: there and back again Main Hall nbd OpenWrt/LEDE status update
18:00 - 18:15 goTenna Call for Reverse Engineering Main Hall tbd We have 4 goTenna devices here. Let's test them to see if they actually mesh and think about making a plan to reverse engineer their proprietary protocol.
18:30 Guided tour, Dinner and Beering Holzmarkt cooperative Learn more and please RSVP here for a trip to holzmarkt. Start @c-base mainhall for a walk
23:42 c-base shutdown Last trains soon after

Thursday - May 10th

Time/Duration Name/Title Location Done by Presentation/notes
11:00 Doors open
12:00 Start of the ongoing BBQ Riverside
13:00 - 14:00 Mainhall binder Wireless community in an individualist migration to New Hampshire
14:00 - 15:00 Brainstorming fieldtracks Riverside yanosz Pad: - Fieldtracks aims at building an open-source tracking systems for field exercises. Having kicked off this project about a month ago, let's discuss technologies (i.e. BLE meshe) and crazy ideas for building meshes in caves, mines, tunnels, etc. - see for a quick glance
15:00 - 15:30 Decentraliazed culture repository Main Hall Gioacchino Mazzurco Community networks are not just people and antennas, communities produce and share lot of cultural assets, nowadays most of those end up in proprietary silos like youtube that are community and network unfriendly. Decentralized culture repository is an attempt to create an home to community cultural assets, in an decentralized and organized way. (DISCLAIMER: the talk is not about blockchain buzz miracle…)
15:30-16:00 Aixperiment Brand Main Hall F In a pilot project we setting up a Freifunk installation in a public square of Brand subburb of Aachen with 20.000 inhabitants. This is done in a collaboration with public institutions, the local church and local businesses.
16:00-17:00 Two Years of the Project Main Hall Leonardo Maccari What we did so far for Community Networks, what we plan to do in the next months, ideas on what may comes after…
17:00-17:05 Encounters in the hybrid city (pitch) Main Hall Panos A short pitch for the Sunday afternoon event in collaboration with urban activist groups from the Prinzessinnengarten. More info here:
17:05-18:00 Community Network Special Interest Group - ISOC Main Hall Panos, Thiago, Bruno, Roger, Monic, Gio Vision, mission, working groups and collaborative process for the development of community networks around the globe. See
18:00-18:45 Lightning Talks Main Hall - Present something in 5-10 minutes
+18:00-18:05 Device Observatory Main Hall Moritz Warning Show what your Smartphone does online - increase awareness for privacy
+18:05-18:10 Old man's rant Main Hall “Greek” Guy a rant - brace yourselves
+18:10-18:15 Briar Main Hall txt.file Secure messaging, anywhere
+18:20-18:25 Mesh Routing Simulator Main Hall Moritz Warning A simplistic mesh routing simulator to sketch algorithms and edit mesh data
+18:25-18:30 Mesh Testbed Generator Main Hall yanosz Config-Mgmt. for OpenWRT (ImageBuilder) for setting up a homogeneous network (i.e. for testbeds)
+18:30-18:35 Idea: Public Virtual IX Main Hall zgiles Should we make a public ASN VPN IX for fun
+18:35-18:40 COSLi Main Hall yanosz A civilian OpenSource license restricting military usage - License:
18:45-19:30 A more resilient Mesh Main Hall Daniel Golle Crypto update (11s+SAE+bmx7 = “dunkelfunk”) and outlook on possible future improvements (eg. OWE to secure clients connections)
19:45-20:15 LibreRouter Status Update Main Hall Gioacchino Mazzurco After years of hard work on LibreRouter[0], the community network dreams router, we have working prototypes. What we got and where we are heading.
20:30-21:30 Brainstorming on “Open Infrastructure Orbit” @35c3 Riverside Monic, Andi and all interested
23:42 c-base shutdown Last trains soon after

Friday - May 11th

Time/Duration Name/Title Location Done by Presentation/notes
11:00 Doors open
12:00 Start of the ongoing BBQ Riverside
13:00 - 13:30 Connectivity and Community in the Amazon region Main Hall Debora Leal, Moacir Neto and Lorena Freitas This is a short talk about a long term relationship between the contemporary and traditional knowledges in the Brazilian Amazon region. The work has been done since 2015 together with an organic farmers association and volunteers from around the globe. The activities range from building a forest garden to implementing a model of internet access, and it also involves an investigation about governance of internet and the use of it.
13:30-14:00 Community-IX Update Main Hall Leon Short introduction and updates from the Community-IX
14:00 - 14:30 Short Status for L3roamd and Babel Integration in Gluon Main Hall Christof
14:30-15:00 Wifi4EU - a fridendly introduction Main Hall gbAc A short introduction to “Wifi4EU” the European Unions public wifi intiative as part of the digital single market strategy. How it started (“eduroam for everybody”); how it is supposed to work; and why there are problems. See public hompage (, mailinglist summary (german) ( and Freifunk Radio (german) (
15:00-16:00 Is Wifi4EU broken by technical specifications? - roundtable Main Hall gbAc Since Monday - the 30th of April - the technical sepcifications ( for Wifi4EU are public.Unfortunately captive portals and the Hotspot 2.0 standard are part of the specifications. Since the arguments against captive portals are clear why_do_the_technical_requirements_presuppose_the_necessity_of_an_authentication_system_t.pdf we would like to figure out if it is possible to oblige the technical constraints and create a desirable infrastructure.
15:00-17:00 Solder Workshop Freifunk-OpenMPP Tracker Ceminar Room Elektra Please find details here and register for solderworkshop
16:00-17:00 Lockdown in the air: legislative agenda in Europe Mainhall Sebastian Raible (kaerF) Data retention legislation in Europe could soon be back on the European agenda. Implications this and other European legislative initiatives may have for the wireless community and society at large, at the example of the Radio “Lockdown” Directive (Radio Equipment Directive).
17:00-17:45 The EU Radio Equipment Directive and Community Networks (presentation) Mainhall François Ambrosini (IBIT Ambrosini UG) / Jörg Pohle (HIIG) The presentation will discuss the possible activation of articles 3(3)(i), i.e. the radio software “lockdown” provision, and 4 (and others) of the RED, and their consequences. An up-to-date status of the discussions within the expert group will be provided, with a view of identifying means for Community Networks to engage. To this end the mandate and obligations of the expert group, as well as the New Legislative Framework and the role of ESOs, will be explained.
17:45-19:00 The EU Radio Equipment Directive (roundtable)Ceminar room FrançoisAmbrosini (IBIT Ambrosini UG) / Jörg Pohle (HIIG) discussion after the presentation
18:00-19:00 State of the NYC Mesh Main Hall Brian and Zach
19:00-20:00 FREE SLOT - Lightning Talks Main Hall
19:00 - 19:10 OpenWISP 2 Main Hall Federico Capoano OpenWISP 2: a growing open source network management system for OpenWRT
19:30-22:30 Flashing Freifunk firmware and configuration Ceminar Room Holger&ThorstenBeginners workshop and advanced settings (use wifi as uplink). Please see requirements and details.
20:00-21:00 The Evernet - High Performance Mesh for Inet, Energy Transition and Local Services Main hall Thomas Hühn Multi Gateway Load Balancing with Wireguard, Decentralised Smart Grid Monitoring, Village Radio … Mesh Router based public Voice Information
21:00-22:00 philosophical excursus Main hall Elektra
22:30-05:00 André's birthday party secret location andrenarchy Close to Warschauer Str, details on request :)

Saturday - May 12th

Time/Duration Name/Title Location Done by Presentation/notes
11:00 Doors open
12:00 Start of the ongoing BBQ Riverside
13:30-14:00 Roaming in Babel mesh networks Main Hall CodeFetch Slides Babel is an emerging mesh technology, but for using it on community networks practically some steps need to be taken… Please watch the talk “Short Status for L3roamd and Babel Integration in Gluon” first as this talk is very technical.
14:00-15:00 The Turnantenna project Main Hall Marco Musumeci The Turnantenna is the new Ninux Community's project that makes you able to re-point an antenna trough remote control. No matter if it's mounted in a position that is not easily accessible: it will turn!
14:00-15:00 Distributed DHCP DaemonSeminar Room sargon DDHCPD implements a distributed DHCP concept for our distributed client realms. We will discuss the basic design of the algorithm, as well as roaming of clients in the scope of DHCP handling and some details about the current state of the implementation
15:00-16:00 GSoC Project 2018 Main Hall Andi + Students OpenWLANMap App by Lilli, Local Phone App by Daniel, Visual Router Config for OpenWrt by Asco
16:00-16:30 Free Wireless Network Activism and the Industrial Media Infrastructures of Forced Migration Main Hall Tim Schütz Handling asylum cases is considered a matter of the state – yet there is a booming “industry” around the asylum process in European countries. In this talk, I will present a co-authored article that investigates how Freifunk activists successfully intervened into the exploitative tendencies of this industry, but also how its modes of participation become increasingly entangled with it.
16:30-17:00 Free Wireless Networks For Refugees: A Survey Protoype Main Hall Tim Schütz Three years after the “long summer of migration”, there has been a wealth of studies on “Welcome Culture” and its particular type of humanitarinian intervention. In this talk, we will present the first draft of a survey that attempts to assess what “doing” free wireless networks for and with refugees looks like in 2018. Your participation and feedback on the survey are encouraged.
17:00-17:30 Datenschutz für Freifunk-Vereine Main Hall Bea
17:00-18:00 Workshop “Freifunk hilft!” Riverside pex Workout for pimping up our website
17:30-18:00 Über die Freifunk Feststellungsklagen Main Hall Bea
18:00-19:00 Against the tides Main Hall Moritz Warning Discussion about the past and, more importantly, the challenges and future of Freifunk
19:00-20:00 Battlemesh Community Meeting Mainhall
20:00-21:30 Presenting Measurement Campaign Results & Conclusion Mainhall
22:00-22:30 musical interlude Main hall Bluse 'n Friends Mesh is in the Air
21:00vpn03 R.I.Pchen Party Riverside spareribs BBQ

Sunday - May 13th

Time/Duration Name/Title Location Done by Presentation/notes
11:00 Doors open
12:00-15:00 Chillout & BBQ Riverside
14:00 - 15:00 Status update: node-config - A simple approach for roaming in l3-meshes Mainhall yanosz Using batman-adv and babel at the same time, roaming and decentralized exits can be done in a simple, starter friendly setup. Slides: 2018-wcw-node-config.pdf - Sources:,
15:00 Current challenges in the city & possible synergies with CNs Mainhall Panos Roundtable meeting with local, Berlin, urban activists
16:00 c-base shutdown all hands needed
16:00 Closing apero and further discussion with urban activists @Prinzessinnengarten Panos urban garden, 15 min walk of c-base