StopSubscribeEventgroup entry

• StopSubscribeEventgroup entries shall set the entry fields exactly like the SubscribeEventgroup entry they are stopping, except the TTL field.
  StopSubscribeEventgroup條目應與其正在停止的SubscribeEventgroup entry的設置一樣，TTL除外。

• The TTL shall be set to 0x000000.
  TTL應設置為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應引用其對應的Subscribe Eventgroup Entry相同的options 。 這包括但不限于Endpoint和Configuration option。