By default, the Solaris DHCP client is disabled. To enable it, you must create a DHCP enable file for each network interface you want to configure with DHCP. The format of the DHCP enable file is: /etc/dhcp.interface_name, where interface_name is the name of the network interface you want configured by DHCP.
For example, if you would like to configure network interface le1 using DHCP, you would create the empty file /etc/dhcp.le1. If you have multiple network interfaces that you would like to configure using DHCP, you must create a DHCP enable file for each interface.