1.3.2.1.2 Interface Release

After a particular interface is no longer needed, an Interface Release message is sent. From this point forward, the interface ID being released is invalid and cannot participate in any packet exchanges until it is acquired using another Interface Query message, or a packet exchange that contains an interface ID. An Interface Release message cannot be issued until all replies for any outstanding requests on that interface have been satisfied. An Interface Release message can only be issued from the side that received the interface ID in a reply to an Interface Query request message.