filer*> ifconfig e1b alias 192.168.101.4

Will add the address 192.168.101.4 to my NIC e1b, which already contained the IP 192.168.100.4

filer*> ifconfig e1b
e1b: flags=0x3d48867 mtu 9000
        inet 192.168.100.4 netmask 0xffffff00 broadcast 192.168.100.255
        inet 192.168.101.4 netmask 0xffffff00 broadcast 192.168.101.255
        ether 00:07:43:05:7c:db (auto-10g_sr-fd-up) flowcontrol full