Most sites that use Oracle Solaris DHCP are not affected by the switch to the /etc/dhcp/inittab file. Your site is affected if you meet all of the following criteria:
You plan to upgrade from an Oracle Solaris release that is older than that the Solaris 8 release.
You previously created new DHCP options.
You modified the /etc/dhcp/dhcptags file, and you want to retain the changes.
When you upgrade, the upgrade log notifies you that your dhcptags file had been modified and that you should make changes to the DHCP inittab file.