The sender would like to use a certain facility if the receiver can handle it. Option is now in effect. WILL DONT Receiver says it cannot support the option. Option is not in effect. The sender says it can handle traffic from the sender if the sender wishes to use a certain option.
Option is now in effect.
DO WONT Receiver says it cannot support the option. Option is not in effect. WONT DONT Option disabled. DONT is only valid response. DONT WONT Option disabled.