Some of this is redundant with Determine the current TCP--IP settings on a system. In the book, these sections are next to each other. So maybe first show how to see settings. And second section cover how to set. --reed

Notes from Jacob K:

hosts: host name database (/etc/hosts)

Modify TCP/IP settings:

Temporarily:

Permanently: set variables in rc.conf

hostname="host.example.com"
network_interfaces="fxp0 lo0"
defaultrouter="10.1.1.254"
ifconfig_fxp0="inet 10.1.1.1 netmask 255.255.255.0"

or

ifconfig_fxp0="DHCP"