Posts Tagged ‘dhcp’

How-To flush the DHCP server lease cache

Monday, January 17th, 2011

On a GNU/Linux server locate the filesĀ  dhcpd.leases and dhcpd.leases~
Mine is a Debian so the location is /var/lib/dhcpd3/ .

  1. delete the temporary file dhcpd.leases~:
    $ sudo rm dhcpd.leases~
  2. flush the lease cache dhcpd.leases:

    $ sudo echo "" > dhcpd.leases

the next time the clients will request a lease they will probably obtain a different IP respect the one they had before.