Linux 查看网卡的MAC地址

转至：https://www.cnblogs.com/kerrycode/p/13709537.html

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]