Renew a DHCP address on your Linux desktop

By November 9, 2014Hacking Tutorial

Renew an IP address one time

  1. Open a terminal and su – to root.
  2. Type ifconfig to show the current IP address that you received from DHCP.
  3. Type dhcpcd -k to send the appropriate signals to dhcpcd.
  4. Now bring the interface back up by typing ifup eth0.
  5. Type ifconfig to show the new IP address.

Renew an IP address every time

  1. Edit the file called dhcp as root. It can be found in the /etc/sysconfig/network directory.
  2. Find the parameter labeled DHCLIENT_RELEASE_BEFORE_QUIT=”no” and change the no to yes so that it then reads DHCLIENT_RELEASE_BEFORE_QUIT=”yes”.
  3. Take the eth0 interface down and then back up again by typing ifdown eth0 and ifup eth0 within a terminal.
  4. Type ifconfig to show the new IP address. It should change every time that the interface is brought down and back up again.