In Solaris 10 you should use the "addif" option to add a "logical interface" to an existing NIC.
- addif address
- Create the next unused logical interface on the specified physical interface. If the physical interface is part of a multipathing group, the logical interface can be added to a different physical interface in the same group.
To add another IP address to an existing NIC or VNIC in Solaris 11 you simply use a different address object, see:
# ipadm create-addr -a 192.0.2.3/24 net3/v4
# ipadm create-addr -a 192.0.2.4/24 net3/v4a
LOL..just befor the screen refreshed on this post, I figured it out. Thank you.