Value,Name,Description,Reference
0,THIS_IF,The network address is associated with this local interface of the sending router,[RFC7188]
1,OTHER_IF,The network address is associated with another local interface of the sending router,[RFC7188]
2-223,Unassigned,,
224-254,Reserved for Experimental Use,,[RFC7188]
255,UNSPECIFIED,No information about this network address is provided,[RFC7188]