I just tried it myself and answered my own question. Each call is given a distinct Download Token for the ip/time limit restrictions so each successive call generates it's own Download Token that has the attributes you give it. Also I'm using the Perl sample code from here and it was missing...

Hello, I tried a search but didn't find this particular question answered. I know you can restrict the download of shared files to a single ip for a limited amount of time. My question is if I were to make repeated calls to this function for the same file and use different IP's and overlapping...

This becomes a bit wierd because you are now billing against a body that did not host the file. Actually what you are asking may be possible through the master account but in reverse of what you want. I'm failry certain you can store a file at a child account and use the master account to download...