# ifconfig -au4
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
e1000g0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 192.168.0.10 netmask ffffff00 broadcast 192.168.0.255
ether 0:4:23:e1:22:34
# cat /etc/hostname.e1000g0:1
192.168.0.11
# svcadm restart network/physical
# ifconfig -au4
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
e1000g0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 192.168.0.10 netmask ffffff00 broadcast 192.168.0.255
ether 0:0:4:23:e1:22:34
e1000g0:1: flags=201000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 192.168.0.11 netmask ffffff00 broadcast 192.168.0.255
# ifconfig e1000g0:1 down unplumb
# ifconfig -a4
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
e1000g0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 192.168.0.10 netmask ffffff00 broadcast 192.168.0.255
ether 0:0:4:23:e1:22:34