ifconfig -a не показывает устройства, для которых не выполнен plumb.
4 порта с T1000:
# dladm show-dev
bge0 link: up speed: 1000 Mbps duplex: full
bge1 link: up speed: 1000 Mbps duplex: full
bge2 link: down speed: 0 Mbps duplex: unknown
bge3 link: down speed: 0 Mbps duplex: unknown
Но только два из них поднято:
# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
bge0: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
inet 172.23.149.24 netmask ffffff00 broadcast 172.23.149.255
ether 0:14:4f:f1:xx:xx
bge1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
inet 172.23.148.25 netmask ffffff00 broadcast 172.23.148.255
ether 0:14:4f:f1:xx:xx