Single permanent IP (up on boot) on one interface:
/etc/inet/hosts content:
#
# Internet host table
#
::1 localhost
127.0.0.1 localhost
192.168.40.91 cxnode01 .cxnode01 loghost
192.168.40.92 cxnode02
The interface where you want to bind the above ip: /etc/hostname.e1000g2 containing
cxnode01