Arp Dos and Arp Spoof find IP and MAC dynamically

[ecthros]

Say I use:

set masq 11

This works normally by looking up in the table the values associated with ID 11.

I want to make it dynamic, so it does:

set masq 10.0.0.57

and instead of looking up the ID, the program looks up the IP address. Should be a pretty simple fix!