ce4e8172_Installation_and_Configuration__For_Instructions
[Task] 8. (Optional) Add zone-specific network interfaces. [Description] To effect network isolation, add one or more network interfaces to a labeled zone. Typically, this configuration is used to isolate labeled subnets. [For Instructions] 
Add a Network Interface to an Existing Labeled Zone
openSolaris 2008 - Creating Labeled Zones - Solaris Trusted Extensions Installation and Configuration
For Instructions