"#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! 🥳

Good news 🎉 From today, it is now possible to natively compress data used in #MPTCP connections with the #xz algorithm! It reduces data being exchanged, and connections are faster! 📈

To be able to achieve that, you need xz-utils >=5.6.0 🐟. Strangely, people have reported it doesn't accelerate #SSH connections! 📉🤔
Any DB specialists out there to help us investigating this with #perf?


(PS: we are sorry for what has happened to Lasse! Take care!)

Backporting bug 🐛 fixes to stable Linux kernel versions: I recently published a new blog post showing what kernel maintainers usually have to do:

https://blog.mptcp.dev/2024/03/04/backports.html

And some news about #MPTCP in the #Linux kernel as usual! 📰

Recently, I stopped my work at #Tessares and started a new challenge: Improving #MPTCP deployability, sponsored by @NGIZero (many thanks for letting me doing that!).

https://nlnet.nl/project/MPTCP-deployability/

My new blog is there if you want more details about this "Angel Project" and what I did so far: https://blog.mptcp.dev/2024/01/01/Angel-Project.html

My recent work for the #MPTCP upstream project was focused on the #CI migration to GitHub Actions 🤖, fixing issues with the new Netdev CI (finally 🎉) validating the selftests, fixing issues with external tools (QEmu, #ss from IPRoute2) 🐛, and more. I'm still proud to be sponsored by @NGIZero 😊

Find out more on this new blog post: https://blog.mptcp.dev/2024/02/02/CI-CI-CI.html

A part of #MPTCP kernel team is now at #KernelRecipes in Paris 🇫🇷. (Not to present but to learn from others!)

Talk to you there if you are around! 😉