pri-utility-addr within network-interface

 

under network-interface what's the role of pri/sec utility address ? Does it have to be public address (IP network interface is public routable) as mentioned in configuration guide ?

 

pri-utility-addr

sec-utility-addr

 

This address can be any unused IPv4 address within the subnet defined for the
network interface. For example, given a network interface of with the IPv4
address 168.0.4.15/24 (identifying the host associated with the network
interface), the possible range of unused IPv4 addresses is 168.0.4.1 to
168.0.4.254. Your network administrator will know which IPv4 addresses are
available for use.