Csak Mac-es tapasztalatból tudok kiindulni. OS X-en a következő kiosztás a szokás:
en0: beépített ethernet interfész
en1: wifi kártya
enX: további ethernet interfészek
fw0: Ethernet over FireWire
Itt egy "élő" ifconfig dump:
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:17:f2:2e:5a:6c
media: autoselect status: inactive
supported media: autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,hw-loopback> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,hw-loopback> 100baseTX <full-duplex,flow-control> 1000baseT <full-duplex> 1000baseT <full-duplex,hw-loopback> 1000baseT <full-duplex,flow-control> none
fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 2030
lladdr 00:17:f2:ff:fe:6b:e7:60
media: autoselect <full-duplex> status: inactive
supported media: autoselect <full-duplex>
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::216:cbff:feb9:7a74%en1 prefixlen 64 scopeid 0x6
inet 10.0.0.171 netmask 0xffffff00 broadcast 10.0.0.255
ether 00:16:cb:b9:7a:74
media: autoselect status: active
supported media: autoselect
en3: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:16:cb:16:f5:d5
media: autoselect status: inactive
supported media: none autoselect 10baseT/UTP <half-duplex>
vmnet8: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 172.16.24.1 netmask 0xffffff00 broadcast 172.16.24.255
ether 00:50:56:c0:00:08
vmnet1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 172.16.130.1 netmask 0xffffff00 broadcast 172.16.130.255
ether 00:50:56:c0:00:01
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Kinek nem inge, ne vegye gatyára