在command 命令運行ifconfig之后，出現很多名詞
lo0
gif0
stf0
en0
fw0
en1
vmnet1
查查看
lo0 = loopback gif0 = Software Network Interface stf0 = 6to4 tunnel interface en0 = Ethernet 0 fw0 = Firewire en1 = Ethernet 1 vmnet1 = Virtual Interface
那en0 en1 en2 en3 en4 怎么這么多？？？
運行一下命令：
networksetup -listallhardwareports Hardware Port: Wi-Fi Device: en0 Ethernet Address: c4:b3:01:bd:ad:1d Hardware Port: Bluetooth PAN Device: en3 Ethernet Address: c4:b3:01:bd:ad:1e Hardware Port: Thunderbolt 1 Device: en1 Ethernet Address: 4a:00:07:4d:b2:b0 Hardware Port: Thunderbolt 2 Device: en2 Ethernet Address: 4a:00:07:4d:b2:b1 Hardware Port: Thunderbolt Bridge Device: bridge0 Ethernet Address: 4a:00:07:4d:b2:b0
原來是Wi-Fi，藍牙，thunderbolt…
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原文鏈接：https://blog.csdn.net/yangziluomu/article/details/75043171