You can see the names that are used in System Preferences for some of the devices by running networksetup -listallhardwareports
:
Hardware Port: HUAWEIMobile-
Device: HUAWEIMobile-Modem
Ethernet Address: N/A
Hardware Port: Bluetooth DUN
Device: Bluetooth-Modem
Ethernet Address: N/A
Hardware Port: Ethernet
Device: en0
Ethernet Address: a8:20:66:31:95:57
Hardware Port: MBBEthernet
Device: en5
Ethernet Address: 00:1e:10:1f:00:01
Hardware Port: Wi-Fi
Device: en1
Ethernet Address: 8c:2d:aa:33:03:e9
Hardware Port: Bluetooth PAN
Device: en4
Ethernet Address: 8c:2d:aa:33:03:ea
Hardware Port: Thunderbolt 1
Device: en2
Ethernet Address: 32:00:1b:25:92:c0
Hardware Port: Thunderbolt 2
Device: en3
Ethernet Address: 32:00:1b:25:92:c1
Hardware Port: Thunderbolt Bridge
Device: bridge0
Ethernet Address: N/A
VLAN Configurations
===================
networksetup -listnetworkserviceorder
produces similar output but it displays "a list of network services in the order they are contacted for a connection" or it shows the services in the same order as System Preferences.
networksetup
does not include devices such as the vmnet1
and vmnet8
devices used by VMWare.
You can see further information about the en
devices by running defaults read /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist
:
{
Interfaces = (
{
Active = 1;
"BSD Name" = en0;
IOBuiltin = 1;
IOInterfaceNamePrefix = en;
IOInterfaceType = 6;
IOInterfaceUnit = 0;
IOMACAddress = <a8206631 9557>;
IOPathMatch = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/RP03@1C,2/IOPP/GIGE@0/BCM5701Enet/en0";
SCNetworkInterfaceInfo = {
UserDefinedName = Ethernet;
};
SCNetworkInterfaceType = Ethernet;
},
{
Active = 1;
"BSD Name" = en1;
IOBuiltin = 1;
IOInterfaceNamePrefix = en;
IOInterfaceType = 6;
IOInterfaceUnit = 1;
IOMACAddress = <8c2daa33 03e9>;
IOPathMatch = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/RP04@1C,3/IOPP/ARPT@0/AirPort_Brcm4360/en1";
SCNetworkInterfaceInfo = {
UserDefinedName = "Wi-Fi";
};
SCNetworkInterfaceType = IEEE80211;
},
{
Active = 1;
"BSD Name" = en2;
IOBuiltin = 1;
IOInterfaceNamePrefix = en;
IOInterfaceType = 6;
IOInterfaceUnit = 2;
IOMACAddress = <32001b25 92c0>;
IOPathMatch = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/RP05@1C,4/IOPP/UPSB@0/IOPP/DSB0@0/IOPP/NHI0@0/AppleThunderboltHAL/AppleThunderboltNHIType2/IOThunderboltController/IOThunderboltLocalNode/AppleThunderboltIPService/AppleThunderboltIPPort/en2";
SCNetworkInterfaceInfo = {
UserDefinedName = "Thunderbolt 1";
};
SCNetworkInterfaceType = Ethernet;
},
{
Active = 1;
"BSD Name" = en3;
IOBuiltin = 1;
IOInterfaceNamePrefix = en;
IOInterfaceType = 6;
IOInterfaceUnit = 3;
IOMACAddress = <32001b25 92c1>;
IOPathMatch = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/RP05@1C,4/IOPP/UPSB@0/IOPP/DSB0@0/IOPP/NHI0@0/AppleThunderboltHAL/AppleThunderboltNHIType2/IOThunderboltController/IOThunderboltLocalNode/AppleThunderboltIPService/AppleThunderboltIPPort/en3";
SCNetworkInterfaceInfo = {
UserDefinedName = "Thunderbolt 2";
};
SCNetworkInterfaceType = Ethernet;
},
{
"BSD Name" = en4;
IOBuiltin = 0;
IOInterfaceNamePrefix = en;
IOInterfaceType = 6;
IOInterfaceUnit = 4;
IOMACAddress = <8c2daa33 03ea>;
IOPathMatch = "Migrated_From: IOService:/IOResources/IOUserEthernetResource/IOUserEthernetResourceUserClient/IOUserEthernetController/en2";
SCNetworkInterfaceInfo = {
UserDefinedName = "Bluetooth PAN";
};
SCNetworkInterfaceType = Ethernet;
},
{
Active = 1;
"BSD Name" = en5;
IOBuiltin = 0;
IOInterfaceNamePrefix = en;
IOInterfaceType = 6;
IOInterfaceUnit = 5;
IOMACAddress = <001e101f 0001>;
IOPathMatch = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/EHC1@1D/AppleUSBEHCI/HUAWEI Mobile@1d110000/IOUSBInterface@4/HuaweiDataCardECMData/en5";
SCNetworkInterfaceInfo = {
"USB Product Name" = "HUAWEI Mobile";
UserDefinedName = MBBEthernet;
idProduct = 5382;
idVendor = 4817;
};
SCNetworkInterfaceType = Ethernet;
}
);
Model = "iMac13,1";
}
In addition to what iklier said about the device name for Wi-Fi being en0
in laptops without an ethernet port and en1
in Macs with a single ethernet port, it is also en2
in at least some Mac Pros with two ethernet ports.