The shared-IP zone is the default type. The zone must have one or more dedicated IP addresses. A shared-IP zone shares the IP layer configuration and state with the global zone. The zone should use the shared-IP instance if both of the following are true:
The zone is to be connected to the same data-link, that is, be on the same IP subnet or subnets as the global zone
You do not want the other capabilities that the exclusive-IP zone provides.
Shared-IP zones are assigned one or more IP addresses using the zonecfg command. The data-link names must also be configured in the global zone.
In the zonecfg net resource, the address and the physical properties must be set. The defrouter property is optional.
These addresses are associated with logical network interfaces. The ifconfig command can be used from the global zone to add or remove logical interfaces in a running zone. For more information, see Shared-IP Network Interfaces.