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#MPTCP in the Linux kernel v6.2 is going to fully support #TCP FastOpen #TFO ⚡: after the client side support added in v6.1, the server side has now been added. Also, the support of sendmsg(MSG_FASTOPEN) and the remaining socket options has been added: TCP_FASTOPEN, TCP_FASTOPEN_KEY and TCP_FASTOPEN_NO_COOKIE.

In v6.2, there will also be cleaner messages in case of error when creating MPTCP endpoints and the path manager will send “listener“ Netlink events, useful for a userspace path manager.

ChangeLog: 📃 https://github.com/multipath-tcp/mptcp_net-next/wiki#changelog

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Patches to support #TCP FastOpen (TFO⚡) with #MPTCP for the server side (and more) have been sent to Netdev mailing list 🎉

https://is.gd/Vn1ZiX 📬

Hopefully, this will be available in the future #Linux v6.2. 🤞

Thanks to all contributors: Dmytro, Paolo, Benjamin, Mat and Matthieu! 👏

Note that the client support is already available in Linux v6.1 (not released as stable yet) as visible in our ChangeLog: 📃 https://github.com/multipath-tcp/mptcp_net-next/wiki#changelog
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#introduction Hi, I’m MPTCP.

I lived for a long time in a forked kernel but I started my upstream integration in v5.6. I’m still in development. Use me!

socket(AF_INET(6), SOCK_STREAM, IPPROTO_MPTCP);

https://mptcp.dev

Currently controlled by: https://fosstodon.org/@matttbe

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