Patent ID: 8255498
Filing Date: 2012-08-28
Classification: H04L

Abstract:
1. A router for connecting to a top-level DHCP server device and connecting with one or more client terminals, said router comprising: a wide area network (WAN) port connected to the top-level DHCP server device and having a DHCP client configured to request a lease of an IP address from the top-level DHCP server device in accordance with the Dynamic Host Configuration Protocol; a local area network (LAN) port connected with the client terminals and having a LAN IP address, an IP pool, and a DHCP server, said DHCP server configured to allocate IP addresses from said IP pool to the client terminals in accordance with the Dynamic Host Configuration Protocol; and a domain conflict prevention program configured to execute the following steps whenever said DHCP client of said WAN port is given a lease of an IP address from said top-level DHCP server device for a WAN IP address of the WAN port: