Linux 查看网卡的MAC地址

如何使用命令查看网卡的MAC地址呢？下面总结一下查看网卡MAC地址的方式。

1：ifconfig命令查看网卡MAC地址

/sbin/ifconfig | grep HWaddr

或

/sbin/ifconfig | grep ether

有些Linux发行版本的MAC地址字段为HWaddr，有些Linux发行版本的MAC地址字段为ether。根据实际情况选择上面命令。

[root@KerryDB ~]# ifconfig -a

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10<host>

        loop  txqueuelen 1000  (Local Loopback)

        RX packets 858  bytes 72251 (70.5 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 858  bytes 72251 (70.5 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

p4p1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 10.20.57.24  netmask 255.255.255.0  broadcast 10.20.57.255

        inet6 fe80::b283:feff:fe55:32e5  prefixlen 64  scopeid 0x20<link>

        ether b0:83:fe:55:32:e5  txqueuelen 1000  (Ethernet)

        RX packets 6637181  bytes 1536293500 (1.4 GiB)

        RX errors 0  dropped 293652  overruns 0  frame 0

        TX packets 4333535  bytes 1080300983 (1.0 GiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

如果想只提取网卡MAC地址，可以使用下面命令(用具体的网卡名替换xxx)

ifconfig xxx | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'

[root@KerryDB tmp]# ifconfig p4p1 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'

b0:83:fe:55:32:e5

[root@KerryDB tmp]#

方法2：/sys/class/net/xxx/address查看

根据网卡名调整，例如这里网卡名为ens160，如果网卡名为xxx,那么应该用/sys/class/net/xxx/address

# more /sys/class/net/ens160/address

00:50:56:95:5c:16

# cat /sys/class/net/eth0/address

00:50:56:b3:81:f8

方法3：ip命令查看网卡MAC地址

[root@KerryDB tmp]# ip link

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000

    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

2: p4p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000

    link/ether b0:83:fe:55:32:e5 brd ff:ff:ff:ff:ff:ff

[root@KerryDB tmp]# ip link show

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000

    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

2: p4p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000

    link/ether b0:83:fe:55:32:e5 brd ff:ff:ff:ff:ff:ff

[root@KerryDB tmp]# ip link show p4p1

2: p4p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000

    link/ether b0:83:fe:55:32:e5 brd ff:ff:ff:ff:ff:f

[root@KerryDB tmp]# ip link show p4p1 | awk '/ether/ {print $2}';

b0:83:fe:55:32:e5

4：nmcli命令查看网卡MAC地址

[root@KerryDB tmp]# nmcli device show p4p1

GENERAL.DEVICE:                         p4p1

GENERAL.TYPE:                           ethernet

GENERAL.HWADDR:                         B0:83:FE:55:32:E5

GENERAL.MTU:                            1500

GENERAL.STATE:                          100 (connected)

GENERAL.CONNECTION:                     p4p1

GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1

WIRED-PROPERTIES.CARRIER:               on

IP4.ADDRESS[1]:                         10.20.57.24/24

IP4.GATEWAY:                            10.20.57.1

IP4.ROUTE[1]:                           dst = 10.20.57.0/24, nh = 0.0.0.0, mt = 100

IP4.ROUTE[2]:                           dst = 0.0.0.0/0, nh = 10.20.57.1, mt = 100

IP6.ADDRESS[1]:                         fe80::b283:feff:fe55:32e5/64

IP6.GATEWAY:                            --

IP6.ROUTE[1]:                           dst = ff00::/8, nh = ::, mt = 256, table=255

IP6.ROUTE[2]:                           dst = fe80::/64, nh = ::, mt = 256

[root@KerryDB tmp]# nmcli device show p4p1 | grep -i hw

GENERAL.HWADDR:                         B0:83:FE:55:32:E5

注意：这里根据实际的网卡名进行调整，如果网卡名为ens160，那么上面命令需要调整为

# nmcli device show ens160 | grep -i hwaddr

GENERAL.HWADDR: 00:50:56:B4:00:94

5：dmesg命令查看网卡MAC地址

[root@KerryDB tmp]#  dmesg | grep eth

[    0.776155] r8169 0000:02:00.0 eth0: RTL8168g/8111g at 0xffffafbe80648000, b0:83:fe:55:32:e5, XID 0c000800 IRQ 27

[    0.776158] r8169 0000:02:00.0 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]

参考资料：

https://www.169it.com/article/14360294838474691537.html

https://stackoverflow.com/questions/245916/best-way-to-extract-mac-address-from-ifconfigs-output

来源：oschina

链接：https://my.oschina.net/u/4272821/blog/4640751

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