Change the physical address of the NIC in Linux. MacAddress

Article title: change the physical address MacAddress of the NIC in Linux. Linux is a technology channel of the IT lab in China. Some basic categories, such as desktop applications, Linux system management, kernel research, embedded systems, and open-source systems, are used to bind network addresses to the physical addresses of NICs, if you change the network adapter or other computers, you may not be able to access the network. The following describes how to change the physical Address (MAC Address. Temporary changes and long-term changes do not actually change the true attributes of the NIC.
　
Temporary changes
　
Temporary changes refer to short-term changes that expire after the system is restarted.
　
The physical address of the Linux Nic is set during network settings.
　
First, make sure you are using the root user. Set eth0.
　
Enable Nic "off"
　
# Ifconfig eth0 down
　
Change the physical address, and change the bold part to the MAC address you want to change:
　
# Ifconfig eth0 hw ether AA: BB: CC: DD: EE: FF
　
Enable eth0.
　
# Ifconfig eth0 up
　
If necessary, add the command to add the route.
　
Note:
　
If you want to set other information such as IP addresses, you must keep the hw ether physical address behind the device name (such as eth0.
　
Long-term changes
　
The changes can be retained after restart. A text editor configuration file is required.
　
Debian (Ubuntu may also be listed here)
　
Edit/etc/network/interfaces, locate the eth0-related location, and modify it to the following figure:
　
Allow-hotplug eth0
　
Iface eth0 inet dhcp
　
# Iface eth0 inet static
　
# Address 1.1.1.6
　
# Netmask 255.255.255.0
　
# Gateway 1.1.1.1
　
Hwaddress ether 00: AA: BB: CC: DD: EE
　
The comments are static IP addresses, but not static IP addresses. For more information, see Debian network settings.
　
Archlinux or Gentoo
　
Edit/etc/rc. conf (Archlinux) or/etc/conf. d/net (Gentoo), in the eth0 configuration string, add hw ether 00: AA: BB: CC: DD: EE to the front of the IP address. for network settings of Gentoo and Archlinux, see the relevant documentation of the release.
　
Fedora or Redhat
　
Edit/etc/sysconfig/network-scripts/ifcfg-eth0 (modify eth0 to your Nic ID if necessary), add or modify
　
HWADDR = AA: BB: CC: DD: EE: FF
　
You can.