dhcp_release (1) - Linux Manuals
dhcp_release: Release a DHCP lease on a the local dnsmasq DHCP server.
NAMEdhcp_release - Release a DHCP lease on a the local dnsmasq DHCP server.
SYNOPSISdhcp_release <interface> <address> <MAC address> <client_id>
DESCRIPTIONA 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
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.
NOTESMUST be run as root - will fail otherwise.
LIMITATIONSOnly usable on IPv4 DHCP leases.
AUTHORThis manual page was written by Simon Kelley <simon [at] thekelleys.org.uk>.