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receiving and sending packets to

Two questions regarding the all-ones aka limited-broadcast aka INADDR_BROADCAST 

1. Is ist true/documented that I only receive broadcasts directed to that 
address if I listen on INADDR_ANY aka

2. When I want to send to that address, how do I specify the interface to send 
on (or network to send to)? I thought that was determined by address the 
sending socket was bound to, but that seems not to be true.

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