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Linux boot will not start the network card problem

Today encountered such a problem, just installed Centos, the boot does not automatically start the network card, you can only use the command ::ifup eth0 to start, but wait until the next boot to repeat this operation I feel particularly troublesome. I checked it and found that it can be modified to boot by modifying the NIC ( ifcfg-eth0) parameter, that is, open the ifcfg-eth0 file.

[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
HWADDR=08:00:27:fa:47:4c
NM_CONTROLLED=yes
ONBOOT=yes ------------------ Modify the following as yes to start automatically.
BOOTPROTO=dhcp
DNS2 =222.85.85.85
TYPE=Ethernet
DNS1=222.88.88.88
USERCTL=no
PEERDNS=yes
IPV6INIT=no

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