renewal
How to force ALL of the DHCP Clients to renew?
It is not possible without letting the network down and up at the client network interface. Theoretically, the DHCP server can send a FORCERENEW message to all connected clients. FORCERENEW is described at RFC3203. (See also https://serverfault.com/a/569869/107832) Unfortunately, the famous ISC DHCP Server does not support it: no current plans for RFC3203 support, also because … Read more