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The work on MPTCP started before QUIC. One big difference is that MPTCP puts a lot of effort to look like TCP to avoid being affected by middleboxes (firewall,
by tracnar 4y ago
The work on MPTCP started before QUIC. One big difference is that MPTCP puts a lot of effort to look like TCP to avoid being affected by middleboxes (firewall, NAT, proxies, ...). QUIC uses UDP which is more often blocked or throttled, though that will quickly change as it gets more widely deployed!