dhcp_release - Release a DHCP lease on a the local dnsmasq DHCP server.

       This manual page was written by Simon Kelley <simon@thekelleys.org.uk>.

                                                                                                 DHCP_RELEASE(1)

       A utility which forces the DHCP server running on this machine to release a DHCP lease.

       Send  a  DHCPRELEASE  message  via  the  specified  interface  to  tell the local DHCP server to delete a
       particular lease.

       The interface argument is the interface in which a DHCP request _would_ be received if it was coming from
       the client, rather than being faked up here.

       The address argument is a dotted-quad IP addresses and mandatory.

       The MAC address is colon separated hex, and is mandatory. It may be  prefixed  by  an  address-type  byte
       followed by -, eg

       10-11:22:33:44:55:66

       but  if  the  address-type byte is missing it is assumed to be 1, the type for ethernet. This encoding is
       the one used in dnsmasq lease files.

       The client-id is optional. If it is "*" then it treated as being missing.

       Only usable on IPv4 DHCP leases.

       dhcp_release - Release a DHCP lease on a the local dnsmasq DHCP server.

       MUST be run as root - will fail otherwise.

dnsmasq(8)

dhcp_release<interface><address><MACaddress><client_id>