Value,Name,Description,Reference
0,LOST,The neighbor relationship with the router with that network address has been lost,[RFC7188]
1,SYMMETRIC,The neighbor relationship with the router with that network address is symmetric,[RFC7188]
2-223,Unassigned,,
224-254,Reserved for Experimental Use,,[RFC7188]
255,UNSPECIFIED,No information about this network address is provided,[RFC7188]