In recent RHEL6/CentOS6 NIC is not getting up by default. So once you login we have to up the network interface to make it work properly. To make the interface available at the time of boot we have to set ONBOOT option in ifcfg-eth0 file.
Open the file In file /etc/sysconfig/network-scripts/devices/ifcfg-eth0 and change ONBOOT value to yes
Before editing the file.
DEVICE=eth0
HWADDR=52:54:00:60:af:6d
NM_CONTROLLED=yes
ONBOOT=no
BOOTPROTO=dhcp
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
IPV6INIT=no
After editing the file
DEVICE=eth0
HWADDR=52:54:00:60:af:6d
NM_CONTROLLED=yes
ONBOOT=yes
BOOTPROTO=dhcp
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
IPV6INIT=no
Reboot the machine and your NIC interface will be activated at the time of booting.
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Mr Surendra Anne is from Vijayawada, Andhra Pradesh, India. He is a Linux/Open source supporter who believes in Hard work, A down to earth person, Likes to share knowledge with others, Loves dogs, Likes photography. He works as Devops Engineer with Taggle systems, an IOT automatic water metering company, Sydney . You can contact him at surendra (@) linuxnix dot com.
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