The value of this object identifies whether the advertisement of the interface address is suppressed:
Null(0): indicates that the interface address can be advertised.
level1(1): indicates that the advertisement of the Level-1 interface address is suppressed.
level2(2): indicates that the advertisement of the Level-2 interface address is suppressed.
level12(3): indicates that the advertisement of the Level-1 and Level-2 interface addresses is suppressed.
By default, the interface address can be advertised.