Hi Olivia, 
> On Mar 2, 2021, at 8:14 PM, Olivia Dunham <theoliviadun...@gmail.com> wrote:
> 
> Thanks Florin! That really helped.

Glad it did!
> Yes, but keep in mind that’s an explicit proxy (client connects to the 
> proxy’s ip). 
> Yes, you're right. How about a transparent one by listening on 0/0 all ports 
> and by modifying proxy to use src and dst ip dynamically for the other 
> connection?

That’s actually considerably more complicated because packets that are not 
destined to one of the local ips are never delivered to/consumed by transports. 
One solution would be to implement something like an ip feature that tracks the 
flows of interest and delivers them to the right transport input nodes. The 
current proxy is just a toy app meant for ocasional testing so it doesn’t 
warrant that complexity. 

> 
> Not sure I understand the question. We only use memfds for fifo segments, 
> apart from cut-through sessions which need 1 fifo segment/ connection, why 
> would that be a limiting factor?
> I didn't know about memfds. Thanks for clearing it up. 

Ack. 

Regards, 
Florin

> 
> 

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