>  Wasn't IL somewhat abandoned because to make it as good as TCP you
> basically had to implement TCP anyway?

due to a failure of vision, the internet only does
well with certain types of ip packets.

il is still an excellent protocol for local networks.

> 9P doesn't require any flow control?  That doesn't seem right :-)  But then

9p, like aoe, is a ping-pong protocol.  each message requires an ack.
therefore, the transport layer doesn't need flow control.

- erik

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