How Linux modifies the IP address

1. Temporarily set the IP address

Ifconfig eth0 IP address (netmask and gateway if not set, use default 0)

This method is only temporarily modified, restart the network card or the server will be restored

2. Set Vi/etc/sysconfig/network-scripts/ifcfg-eth0 using the VI Editor

Device=eth0 NIC corresponding device alias, such as Ifcfg-eth0 first NIC Bootproto=static

How the NIC obtains the IP address,

Static IP Address

DHCP (get IP via DHCP protocol)

Bootip IP address obtained through the BOOTP protocol broadcast=192.168.0.255 subnet broadcast address HWADDR=00:50:56:8e:47:ee nic Physical Address ipaddr =12.168.1.117 Network card IP address

Ipv6init=no whether to enable IPV6ipv6_autoconf=no netmask=255.255.255.0 network card corresponding netmask networ k=192.168.1.0 the network address of the NIC Onboot=yes if the system is set to Yes when it is started, the device is activated when the system starts. The default setting is Yes

As for the following type and UUID this does not have to worry about, the type of the network card

How Linux modifies the IP address