... /etc/rc.conf.When the system starts, the startup scripts use this information to configure the network. It also optionally starts the interface immediately.Inthe next section we’ll look at the commands ... also emphasizes the difference between the output of ifconfig and the routing table. ifconfig shows the address of the interface, the address needed to reachour system. Forthe Ethernet interface, ... access to the other end of the PPP link only,sothe net maskis set to 255.255.255.255 (only one system).• Finally ,the fourth entry is the big difference. It doesn’thav e acounterpart in the ifconfig...