Configure Linux DHCP client ( dhclient ) to persistently look for an IP address lease
Q. I've HP Laptop installed with CentOS 5 workstation operating system. How can I configure Linux dhclient command to continuously requests an IP lease until one is granted by DHCP Server / Router?
A. You need to set the PERSISTENT_DHCLIENT option by editing Ethernet configuration file. This option is turned off by default.
Login as the root user
Open /etc/sysconfig/network-scripts/ifcfg-eth0 file to set eth0 to persistently look for an IP address lease:
# vi /etc/sysconfig/network-scripts/ifcfg-eth0
Append line PERSISTENT_DHCLIENT=1, at the end configuration should look as follows:
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=dhcp
PERSISTENT_DHCLIENT=1
Save and close the file. Restart networking service or reboot laptop / desktop to test the changes:
# /etc/init.d/networking restart
Please note that your network switches and other protocol may need to configure properly to work with this option.
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Tags: , dhcp howto, dhcp ip addresses, how to configure dhcp, linux dhcp eth0, linux dhcp gateway, linux dhcp ifconfig, linux dhcp persistent, linux dhcp settings, linux dhcp table, PERSISTENT_DHCLIENT=1
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