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! 🥳

@mptcp I suppose these days we rather need Multipath QUIC

@juliank @mptcp we need both: TCP is not dead, heavily used, and easily accessible.

MPQUIC is still being discussed at the IETF, this is impacting its adoption. https://lwn.net/Articles/964377/

@matttbe @juliank @mptcp how does traceroue work then?

@MITREsteve @juliank @mptcp Sorry, I'm not sure I understand the question. On a smartphone for example, a user can be simultaneously connected to Internet via Wi-Fi and cellular. There are then two different paths to reach the same server.

@matttbe @MITREsteve @mptcp MTR can display multiple hosts per hop, traceroute probably can do the same?

That even happens with normal TCP if routing changes between packets.

@MITREsteve @juliank @mptcp (part 2) even if in this case the smartphone has two routes, only one will be used to initiate connections, certainly the one considered as the "default route", e.g. the one attached to the Wi-Fi network.

@matttbe @juliank @mptcp
I thought traceroute worked by sending a packet with TTL of 1 which would echo back it's death, then a packet of TTL 2 etc. Therfore if the path changes for each packet, one would get a combonation of multiple paths. Am I wrong?

@MITREsteve @juliank @mptcp it does send packets with different TTL's, but it doesn't establish any connections. Likely only one path is used, the one of the default route, the route MPTCP (or any other protocols) would use for the initial path.