StopSubscribeEventgroup entries shall set the entry fields exactly like the SubscribeEventgroup entry they are stopping, except the TTL field. StopSubscribeEventgroup条目应与其正在停止的SubscribeEventgroup entry的设置一样，TTL除外。
The TTL shall be set to 0x000000. TTL应设置为0x000000。
A Stop Subscribe Eventgroup Entry shall reference the same options the Subscribe Eventgroup Entry referenced. This includes but is not limited to Endpoint and Configuration options. Stop Subscribe Eventgroup Entry应引用其对应的Subscribe Eventgroup Entry相同的options 。 这包括但不限于Endpoint和Configuration option。
