/* Forces 'cli' into a (re)initialization state, in which no address is bound
* but the client is advertising to obtain one. If 'requested_ip' is nonzero,
* then the client will attempt to re-bind to that IP address; otherwise, it
/* Forces 'cli' into a (re)initialization state, in which no address is bound
* but the client is advertising to obtain one. If 'requested_ip' is nonzero,
* then the client will attempt to re-bind to that IP address; otherwise, it