Check out the <a href=”http://www.tcpipguide.com/free/index.htm”>TCP/IP Guide</a> and the page that discusses <a href=”http://www.tcpipguide.com/free/t_DHCPLeaseLifeCycleOverviewAllocationReallocationRe.htm”>DHCP Lease Lifecycle</a>. This will help you understand the DHCP protocol and address lifecycle. An infinite address lease would be considered a static or a reserved address. It depends on the client and how the tcp/ip stack handles address lifecycle as to whether you will lose your connection or not. Windows behavior is that clients typically keep a “sticky” address and do not lose it unless either statically assigned or another DHCP server responds.