There will be an official MPTCP community meetup at FOSDEM this year!

No need to have improvised meetings outside in a cold weather anymore, we can meet on Saturday from 17.30 in H.3242. Feel free to come!

https://fosdem.org/2025/schedule/event/fosdem-2025-6750-mptcp-community-meetup-bof/

#MPTCP #FOSDEM #Brussels

#iperf3's next version should support #MPTCP thanks to a new '-m' (or --mptcp) option 🎉

Our PR, initially created in 2021, has recently been merged! It will no longer be needed to use iperf3 with "mptcpize run" on both sides to get MPTCP support, and it is enough to add -m only on the client side!

https://www.mptcp.dev/apps.html

The mptcpd daemon 😈 (and mptcpize) is now packaged in #AlpineLinux and #NixOS 🎉

https://www.mptcp.dev/apps.html#linux-distributions

These packages are available thanks to Natanael, Guilhem, Martin and Matthieu's work!

Nice blog post from Marek (Cloudflare)!

Improvements for the client side are coming (and even already available with an up-to-date kernel ;-) )! Do not hesitate to tell Cloudflare it would be nice if they can support MPTCP on the server side ;-) https://blog.cloudflare.com/multi-path-tcp-revolutionizing-connectivity-one-path-at-a-time/

Interested to use #SSH with #MPTCP 🔀? While waiting for a native support in OpenSSH, there are workarounds: a new entry has just been added in our FAQ ⤵️
https://www.mptcp.dev/faq.html#how-to-enable-mptcp-support-with-openssh

"#Systemd 257 has been released. As usual, the list of changes is long; it includes support for multipath TCP in socket units" 🎉

https://lwn.net/Articles/1001657/
#MPTCP

Simply add this in your SSH server service file and it will support MPTCP:

[Socket]
SocketProtocol=mptcp

What happened around #MPTCP 🔀 last month?
Improvements, bug fixes, security audit, mptcpd 0.13, what's next, etc. Read on to find out more about that ⤵️

https://blog.mptcp.dev/2024/12/04/more-improvements-for-end-users.html

#MPTCP is supported by all major GNU/Linux distributions 🐧 but mptcpd daemon 😈 (and mptcpize) is not packaged in some of them. Anybody willing to help packaging mptcpd in these distro, e.g. #AlpineLinux and #NixOS? 🙂

A new page on mptcp.dev now lists the Linux distributions: https://www.mptcp.dev/apps.html#linux-distributions

What happened around #MPTCP 🔀 in the last couple of months? Bug-fixes 🐛, improvements 🆕, app support ☑️, conferences 🎙️, what’s next 🔮: read on to find out more about what happened recently 👩‍💻⤵️

https://blog.mptcp.dev/2024/10/28/summer-update.html

Future versions of #OpenWrt will have #MPTCP support available by default, ready to be used for handover and link aggregation features!

https://github.com/openwrt/openwrt/pull/16786

mptcpd and mptcpize will also be available in the official repositories!

#MPTCP features that will be present in the future #Linux v6.12: 🐧

• Fallback to TCP in case of MPTCP blackhole 🕳: if a firewall explicitly blocks MPTCP
• This info is also cached: to directly fallback to TCP for 1h+, check the new blackhole_timeout sysctl
• New MIB counters for sent MP_JOIN to help in case of configuration issues 🔄
• CI: Code coverage – Coveralls 📈

(As always: these features have been added to Linus tree, hopefully they will still be there when this version will be released!)

If nothing changes, #MPTCP will be natively supported in the future #Apache HTTPD v2.5 🎉🌐

Thanks to Anthony for this work!

https://svn.apache.org/viewvc?view=revision&revision=1920586

For other apps with native MPTCP support: https://mptcp.dev/apps.html

A new macOS page 🌐 is available on our website for 🍏 iOS and OSX developers who are interested to enable #MPTCP in their apps:

https://www.mptcp.dev/macOS.html

If nothing changes, #MPTCP will be natively supported in the future #HAProxy v3.1.0 🎉🔀

Thanks to Anthony, Dorian, Willy and Matthieu for their work!

https://github.com/haproxy/haproxy/commit/20efb856e

MPTCP is (finally) going to be enabled in Azure Linux 3.0 🎉

https://github.com/microsoft/azurelinux/pull/10014

If you are using this distribution, you will soon be able to use MPTCP!

#cURL 8.9.0 now natively supports #MPTCP on Linux 🌐

curl --mptcp https://example.com

https://curl.se/docs/manpage.html#--mptcp

Thanks Dorian and the cURL maintainers for their help!

Can maintainers easily ignore old bugs they discover when working on new features? 🙈
Delaying these features now, or having to deal with bugs later, possibly when it is really not a good time for that? 🐛

I wrote a bit about this topic in my last blog post 📰 ⤵️

https://blog.mptcp.dev/2024/07/21/maintainers-responsibilities.html

I don't know if I did the good choice at the end, but don't hesitate to share your opinions! 😉

mptcp.dev website 🌐 has been updated last month. This new website was really needed to help supporting new users who are interested by #MPTCP. I wrote a blog post about that 📰:

https://blog.mptcp.dev/2024/05/03/supporting-new-users.html

This has been made possible thanks to @NGIZero support, making this MPTCP project more community oriented, and that's great 🎉

How we use GitHub Actions 🤖 with #KVM support and tools like virtme-ng, packaged in a Docker, to validate our #Linux kernel tests linked to #MPTCP: I recently wrote a blog post about that ⤵️

https://blog.mptcp.dev/2024/04/08/CI-new-feat.html

Our new 🆕 website is now online 👇

➡️ https://www.mptcp.dev 🌐

It is now for a wider audience:

• It now explains what is MPTCP and some concepts.
• Users will find how to configure the kernel, how to check it is working, how to force apps to use MPTCP, etc.
• Application developers will find how to add MPTCP native support, how to retrieve info from an app, etc.
• A list of frequently asked questions.
• A list of apps supporting MPTCP natively.

Feel free to have a look, and suggest modifications!

Thanks to everybody who was involved in this upgrade!

To celebrate that, we have a new logo! 🥳