[tcpm] TCP Connection ID

[Alexander Azimov <[e-mail]>]

Dear WG,

As you all know L3 LB is a common element of today's cloud infrastructure.
Its original design was based on the connection state that maps backend IPs
(real IPs) to connection. Recently there were several papers that were
suggesting the move to the stateless L3 LB, where the state (connection id)
becomes the property of connection and it kept at the client, so the L3 LB
can work without keeping state for every connection. As far as I
understand, for QUIC it becomes native with destination connection ID in
its header.

I've seen suggestions for getting this functionality in TCP by overloading
the Timestamps option or even TCP SEQ - can't say that such design looks
good for me. I wonder was there an attempt to add connection id in the TCP
options, and if it was - why it wasn't successful?

-- 
Best regards,
Alexander Azimov