alias IP address to loopback interface for failover

[Raman Yousefi]

Note the following from the 11.11 release notes (p. 198)
"Using the loopback interface lo0:1, lo0:2 and so on, the system will respond to the IP address assigned to these interfaces using any phsyical interface. Thus, a system can now have a "systemIP" address that will be available as long as one interface stays usable........With the new VIP feature, a remote user can specify an IP address that will respond regardless of the local interface where the packet arrived. This feature is an enhancement."

Has anyone successfully implemented this enhancement?