This document, and my Proxy ARP implementation could not have been made possible without the help of:
Andrew Tridgell, who implemented the subnetting options for arp in Linux, and who personally assisted me in getting it working
the Proxy-ARP mini-HOWTO, by Al Longyear
the Multiple-Ethernet mini-HOWTO, by Don Becker
the arp(8) source code and man page by Fred N. van Kempen and Bernd Eckenfels