Label Format Specifier,Label Description,Status,Reference
0,Reserved,,
1-127,Reserved for Private Use,,
128-255,Reserved for Experimental Use,,
256,CIPSO (tag type #1),active,[FIPS-188]
257,CALIPSO [RFC5570],active,[RFC5570]
258,FLASK Security Context,active,[FLASK99]
259,IPSO,active,[RFC1108]
260-65535,Unassigned,,