We're hoping YOU will come speak at our conference at the University of Ottawa!

Tutorials: June 11-12, 2025 Conference: June 13-14, 2025

Instructions for submitting your abstract and lots more info are here: https://bsdcan.org/2025/papers.php

#BSDCan #netBSD #openBSD #freeBSD #BSD

We invite talks by and for users, sysadmins, researchers, developers, enthusiastic hobbyists, students, retirees, social scientists...if you can talk for 50 minutes about a topic directly related to the BSD derivative projects or community or can deliver a technical tutorial for BSD users, we want to hear about it!

The website has a big page of hints for your first proposal and what we're looking for in a talk, and a large archive of past topics is available. (But don't let that limit you...maybe we just haven't heard YOUR talk yet!)

We think everyone should be able to participate in community events and though we have a small budget, we hope to accommodate as much of our community as we can.

• We have a mask policy (your audience will be wearing N95s)
• We stream talks online and with live chat
• Can't attend in person? We can host your talk remotely
• We reimburse speakers for their travel and hotel fees. (If fronting these fees would be a hardship, apply anyway and we'll talk!)

Apply today!

(Interested in sponsoring? Check out our sponsorship opportunities at https://bsdcan.org/2025/sponsorship.php or contact funding@bsdcan.org!)

The initial list of 21 'low hanging fruit' videos from EuroBSDcon 2024 has been released with more to follow: https://youtube.com/playlist?list=PLskKNopggjc4UnB5xEDH9Aup_oOb9Lo7G&feature=shared

The twelfth annual OpenZFS Developer Summit and first annual OpenZFS User Summit will be an in-person event held in Portland, Oregon, USA Oct 26-29 (Sat-Tue), 2024

After missing BSDCan 2024, we are happy to report a Groff spotting @EuroBSDCon hallway track.

Still in development, but certainly a step in the right direction. Seems a perfect runabout vehicle to get you to public transportation and to get groceries on the way home. Hopefully wider adoption can bring the price down. It would also function as a grid connected battery as mentioned in this "Living on Earth " segment. https://loe.org/shows/shows.html?programID=24-P13-00035

Funding request for *BSD Community AV conference streaming. We are collecting to help keep our rental bill for @EuroBSDCon lower and to produce better videos for the *BSD Community.

Details here: https://lists.nycbug.org/pipermail/talk/2024-August/018737.html

@EuroBSDCon is coming up quickly. If you are interested in supporting us this link should help:

https://freebsdfoundation.org/donate/

If you would like to contribute to our efforts, donations can be made to the FreeBSD Foundation with the memo "Community AV Team".

Thank you!

#runbsd

Upcoming EuroBSDCon OpenBSD talk Confidential Computing with OpenBSD by Hans-Jörg Höxer

Confidential computing is a family of techniques to enhance security
and confidentiality for data in use. One technical approach is strong
isolation for virtual machines.

AMDs Secure Encrypted Virtualization (SEV) offers several feature sets
for isolation of guest virtual machines from an non-trusted host hypervisor
and operating system. These feature sets include memory encryption,
encryption of guest state including CPU registers and an attestation
framework.

In this talk we will explore some of the AMD SEV feature sets. We will
describe how to use them to run OpenBSD as both

• a confidential guest VM and
• a host hypervisor providing a confidential execution environment.

Topics covered are CPU feature detection, low level kernel initialization,
memory management, virtio(4) device drivers and the virtual machine
daemon vmd(8).

I](https://events.eurobsdcon.org/2024/speaker/ZZNGCU/)

Tickets are still available and this talk will be streamed and recorded for later release.

Upcoming EuroBSDCon OpenBSD talk Building a SD-WAN appliance suitable for an Australian Health Sector NFP/NGO by Jason Tubnor

Latrobe Community Health Service (LCHS) - AS139466 - is a Not for Profit (NFP)/Non-Government Organisation (NGO) headquartered in Victoria, Australia. The organisation consists of 40 offices and 2 data centres across the States of Victoria and New South Wales with over 1,500 employees. All LCHS infrastructure is designed and managed in-house without the use of large-scale cloud infrastructure. Since 2015, BSD Unix has been used for various workloads within the organisation.

This talk focuses on our next generation SD-WAN appliance built on OpenBSD technology using commodity hardware. Topics will include the network topology, design choices, various OpenBSD VPN and routing technologies and orchestrating build, deployment and management across the fleet using Ansible.

Jason Tubnor

Tickets are still available and this talk will be streamed and recorded for later release.

Upcoming EuroBSDCon OpenBSD talk A Packet's Journey Through the OpenBSD Network Stack by Alexander Bluhm

When debugging network issues, it is important to understand when
certain things happen. Tcpdump provides valuable insight, pf
transforms packets, pseudo devices add features, and netstat counters
show action. The call graph of the functions within the kernel is
the base to comprehend the relation between these sources of
information.

The layering of kernel code in hardware drivers, pseudo devices,
IP processing, forwarding and protocol layer is explained. The
kernel provides the socket interface to userland processes. Packet
forwarding happens within the kernel. Bridge code uses certain
shortcuts. pf is a swiss knife that can manipulate traffic in
multiple layers. IPsec has an independent interface that overrides
routing. Routing itself and neighbor discovery is a necessary step
that has its tentacles everywhere. Checksum calculation can be
performed by hardware offloading.

By using examples with a single packets, their way through the
kernel is shown. The possible branches, configuration options, and
measurement output are put in correlation.

Alexander Bluhm

Tickets are still available and this talk will be streamed and recorded for later release.

Upcoming EuroBSDCon talk: Why (and how) we're migrating many of our servers from Linux to the BSDs by Stefano Marinelli

A few years ago, we decided to migrate many of our servers (and many of those of our clients) from Linux to the BSDs - FreeBSD, OpenBSD, NetBSD - depending on the specific services. In this presentation, I will discuss the reasons behind our decision, the technical and organizational challenges we faced, the tangible benefits we have experienced, and why we believe this migration is successful. I will provide specific examples and real-life case studies. In an increasingly complex world, relying on simple, stable, and secure solutions is becoming more and more important, and the BSDs can make a significant contribution in this direction.

Stefano Marinelli

Tickets are still available and this talk will be streamed and recorded for later release.

Upcoming EuroBSDCon OpenBSD talk OpenBSD vs. IPv6 by Florian Obser

** .ical](https://events.eurobsdcon.org/2024/talk/AV78U9.ics)09-21, 17:45–18:30 (Europe/Dublin), Foyer B **

We will give an overview of past, present and future work on IPv6 in OpenBSD.

We will show how we replaced KAME stack code in both the kernel as well as userland with modern, privilege separated daemons for stateless address auto configuration. slaacd(8) runs on the host to solicit router advertisements and configures addresses and routes. rad(8) runs on the router to send router advertisements. A newly written daemon for DHCPv6, dhcp6leased(8), requests prefixes from an upstream ISP which then can be used by rad(8) for router advertisements.

Next we will show the new IPv6 source address selection in the kernel, including support for the infamous Rule 5.5 of RFC 6724.

In ongoing and future work we will touch on client-side address translation using pf(4)'s af-to feature to support the 464XLAT transition mechanism for v6-mostly networks.

Florian Obser