ChorusOS 4.0 Network Administration Guide

Sharing IP Addresses with the LAN

When you specify a subset of the addresses used on the local area network for serial line connections between the host workstation and one or more target systems, Windows NT 4.0 activates proxy-ARP for the connected serial clients automatically and behaves like a bridge. Windows NT 4.0 makes it possible, by default, to reach the PPP client from other systems on the Ethernet.