Full disclosure: There is a (basically equivalent) Q on here, that has an approved A. Problem: the commenters have the same problem in understanding the A that i have, and the answerer doesn’t seem to respond anymore;

So here goes:

Very usual setup, two computers with browsers, local IP:port and, behind a router at

Both want to know something from answer-R-us.org (

  • 11 wants to know ‘color of oranges?’
  • 12 wants to know ‘number of the beast?’.

According to my understanding of the answer from from the Q linked above, the router takes the questions, forwards them to, with return address, and internally keeps a note like:

Sent request from to
Sent request from to

Now two messages come in from to : “orange” and “666” – how does the router know which clients get what?

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