Create a virtual switch with no associated physical device.
If assigning an address, ensure that the virtual switch has an unique MAC address.
primary# ldm add-vsw [mac-addr=xx:xx:xx:xx:xx:xx] primary-vsw0 primary
Plumb the virtual switch as a network device in addition to the physical network device being used by the domain.
See Configure the Virtual Switch as the Primary Interface for more information about plumbing the virtual switch.
Configure the virtual switch device for DHCP, if needed.
See Configure the Virtual Switch as the Primary Interface for more information about configuring the virtual switch device for DHCP.
Create the /etc/dhcp.vsw file, if needed.
Configure IP routing in the service domain, and set up required routing tables in all the domains.
For information about how to do this, refer to Packet Forwarding and Routing on IPv4 Networks in System Administration Guide: IP Services.