Note about Debian Nic settings

For more information about Debian Nic settings, see Linux Release Technology-Debian. Author: lpfrx

When I was doing a Debian system migration experiment, after the migration, the network adapter would not be able to start up. After I entered the terminal and executed ifconfig-a, the original eth0 was gone, instead of eth1, why is it like this? But google has found a solution and changed eth1 back to eth0:

The Debian network setting file is/etc/network/interfaces. My original file is:

Auto lo

Iface lo inet

# Allow-hotplug eth0

Auto eth0
Iface eth0 inet static
Address 192.168.0.100
Netmask 255.255.255.0
Gateway 192.168.0.1

However, after the migration system is restarted, the NIC does not work. It must be modified:

/Etc/udev/rules. d/z25_persistent-net.rules

SUBSYSTEM = "net", DRIVERS = "? * ", ATTRS {address} =" 00: 0c: 29: 15: 3a: 48 ", NAME =" eth0 ″
# PCI device 0x1022: 0x2000 (pcnet32)
SUBSYSTEM = "net", DRIVERS = "? * ", ATTRS {address} =" 00: 0c: 29: 15: 3a: 52 ", NAME =" eth1 ″

I commented out the above eth0 and changed eth1 to eth0. In this way, after saving and restarting, everything will be normal:

# SUBSYSTEM = "net", DRIVERS = "? * ", ATTRS {address} =" 00: 0c: 29: 15: 3a: 48 ", NAME =" eth0 ″
# PCI device 0x1022: 0x2000 (pcnet32)
SUBSYSTEM = "net", DRIVERS = "? * ", ATTRS {address} =" 00: 0c: 29: 15: 3a: 52 ", NAME =" eth0 ″

In the past, debian had many network settings to be modified. In centos, you can use the setup command to use the graphical interface inside to make a good choice.