Modify MAC address in centos Linux

 

 

1. First view the NIC information:

[Root @ localhost ~] # Ifconfig

Eth0 link encap: Ethernet hwaddr 00: 0C: 29: 49: 22: C8

Inet ADDR: 10.65.7.182 bcast: 10.65.7.255 mask: 255.255.255.0

Inet6 ADDR: fe80: 20c: 29ff: fe49: 22c8/64 scope: Link

...

 

 

The figure above shows the Mac information of the device eth0, that is, the hardware address hwaddr 00: 0C: 29: 49: 22: C8.

2. Disable eth0 because the network service is disabled. Therefore, you must directly operate the local machine.

[Root @ localhost ~] # Ifconfig eth0 down

3. Change the Mac information to 00: 0C: 29: 49: 22: C1.

[Root @ localhost ~] # Ifconfig eth0 HW ether 00: 00: 00: 00: 00: C1

4. Start eth0

[Root @ localhost ~] # Ifconfig eth0 up

5. view the modified Nic information:

[Root @ localhost ~] # Ifconfig

Eth0 link encap: Ethernet hwaddr 00: 00: 00: 00: 00: C1

Inet ADDR: 10.65.7.182 bcast: 10.65.7.255 mask: 255.255.255.0

Inet6 ADDR: fe80: 20c: 29ff: fe49: 22c1/64 scope: Link

Up broadcast running Multicast MTU: 1500 Metric: 1

RX packets: 3470 errors: 0 dropped: 0 overruns: 0 frame: 0

TX packets: 1509 errors: 0 dropped: 0 overruns: 0 carrier: 0

Collisions: 0 FIG: 1000

RX Bytes: 907742 (886.4 kib) TX Bytes: 182280 (178.0 kib)

Interrupt: 67 base address: 0x2024

 

Lo link encap: local loopback

Inet ADDR: 127.0.0.1 mask: 255.0.0.0

Inet6 ADDR: 1/128 scope: Host

Up loopback running MTU: 16436 Metric: 1

RX packets: 1505 errors: 0 dropped: 0 overruns: 0 frame: 0

TX packets: 1505 errors: 0 dropped: 0 overruns: 0 carrier: 0

Collisions: 0 txqueuelen: 0

RX Bytes: 2414590 (2.3 MIB) TX Bytes: 2414590 (2.3 MIB)

 

★★★★★★★★★★★★

Permanently modify Mac information:

Open/etc/rc. d/rc. Local and append the following three lines:

Ifconfig eth0 down

Ifconfig eth0 HW ether 00: 00: 00: 00: 00: C1

Ifconfig eth0 up

Then restart