dhcpack instead dhcpnak

[Simon Hobson]

Steven Carr wrote:
>You can't really prevent this other than don't change the IP address
>to another address in the same subnet. The workaround is that you will
>need to force the client to release it's current IP address then
>request a new address.

A useful trick when changing addresses is to explicitly block use of the old address :

range a.b.c.d [a.b.c.e] {
 deny booting ;
}
Next time the client attempts to renew, it'll get NACKed and so start again with a Discover to get a new address.