Smaller than a /24 for BGP?

William Herrin bill at
Sat Jan 28 19:24:30 UTC 2023

On Sat, Jan 28, 2023 at 10:15 AM Donald Eastlake <d3e3e3 at> wrote:
> Use Multipath TCP

Doesn't work well. Has security problems (mismatch between reported IP
addresses used and actual addresses in use) and it can't reacquire the
opposing endpoint if an address is lost before a new one is

MPTCP has been complete for years. The adoption rate is very low.

QUIC is better, but it still leaves finding the server's new IP
address as an exercise for a process outside of the protocol. I
haven't kept my ear to the ground for the last year or two but I
haven't heard about it making the expected inroads versus HTTP 1.1
over TCP. Unfortunately, QUIC is a very complex protocol that's very
hard to troubleshoot. The complexity comes from a slew of mandatory
security components which should have been optional.

Bill Herrin

For hire.

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