I agree that for updatability it should be something that can be shutdown, reloaded, restarted as simply and with least risk possible. Now I'm thinking that it'

I agree that for updatability it should be something that can be shutdown, reloaded, restarted as simply and with least risk possible. Now I'm thinking that it'll be easier to checkpoint/restore a quic connection than any other thing based on tcp or hidden in the kernel, so you could even do zero-downtime update.