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dhcp_release - Online in the Cloud

Run dhcp_release in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command dhcp_release that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



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


dhcp_release <interface> <address> <MAC address> <client_id>


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


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.


MUST be run as root - will fail otherwise.


Only usable on IPv4 DHCP leases.

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