Linux/macOS 查看网络接口

Linux

显示网络设备的状态：

$ nmcli device status
DEVICE   TYPE      STATE                   CONNECTION
enp0s5   ethernet  connected               Wired connection 1
lo       loopback  unmanaged               --

这里我们看到有两个网络设备：enp0s5 和 lo。

• enp0s5 是 ethernet（以太网）
• lo 是 loopback（环回接口）

我们要找的是以太网接口的 IP 地址。在这里是 enp0s5.

查看 enp0s5 接口的具体信息：

$ ip addr show enp0s5
2: enp0s5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 00:1c:42:9b:48:d6 brd ff:ff:ff:ff:ff:ff
    inet 10.211.55.6/24 brd 10.211.55.255 scope global dynamic noprefixroute enp0s5
       valid_lft 1007sec preferred_lft 1007sec
    inet6 fdb2:2c26:f4e4:0:b3fc:ed85:dcfb:317f/64 scope global temporary dynamic
       valid_lft 604009sec preferred_lft 85336sec
    inet6 fdb2:2c26:f4e4:0:3e08:a4fd:b176:a427/64 scope global dynamic mngtmpaddr noprefixroute
       valid_lft 2591859sec preferred_lft 604659sec
    inet6 fe80::42f1:b7f7:4114:647b/64 scope link noprefixroute
       valid_lft forever preferred_lft forever

macOS

查看所有网络接口：

$ networksetup -listallhardwareports

Hardware Port: Ethernet Adapter (en4)
Device: en4
Ethernet Address: 4a:d7:f9:4e:a8:e6

Hardware Port: Ethernet Adapter (en5)
Device: en5
Ethernet Address: 4a:d7:f9:4e:a8:e7

Hardware Port: Ethernet Adapter (en6)
Device: en6
Ethernet Address: 4a:d7:f9:4e:a8:e8

Hardware Port: Thunderbolt Bridge
Device: bridge0
Ethernet Address: 37:d3:98:60:9c:00

Hardware Port: Wi-Fi
Device: en0
Ethernet Address: d8:89:f4:ea:59:3e

Hardware Port: Thunderbolt 1
Device: en1
Ethernet Address: 37:d3:98:60:9c:00

Hardware Port: Thunderbolt 2
Device: en2
Ethernet Address: 37:d3:98:60:9c:04

Hardware Port: Thunderbolt 3
Device: en3
Ethernet Address: 37:d3:87:60:9c:08

VLAN Configurations
===================

这里看到我们的 mac 上有多个接口：Ethernet Adapter、Thunderbolt Beidge、Wi-Fi、Thunderbolt。我的 mac 当前是在连接 Wi-Fi 使用，因此我们要查看 Wi-Fi 接口 en0 的 IP 地址。

查看 en0 接口的具体信息：

$ ip addr show en0
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	ether c8:89:f3:ea:59:3e
	inet6 fe80::c6c:28b5:9e91:4dc5/64 secured scopeid 0xf
	inet 10.198.159.58/16 brd 10.198.255.255 en0