The type of the prefix length entry. exact (1) - a route's prefix/length must match the prefix list entry exactly in order for an entry to be considered a match. longer (2) - a route's prefix/length must match the defined prefix AND have a length that is an exact match or longer in order for an entry to be considered a match. through (3) - a route's prefix/length must match the defined prefix AND have a length that is an exact match or longer up to and including the defined maximum length in order for an entry to be considered a match. range (4) - a route's prefix/length must match the defined prefix AND have a length that is greater than or equal to the length defined by tRPOperPrefixListBeginLength and less than or equal to the length defined by tRPOperPrefixListThroughLength in order for an entry to be considered a match. to (5) - a route's prefix/length must match the condition from a start prefix/length to an end prefix/length. The end prefix/length is indicated in the corresponding entry in the tRPOperPfxListToTable. addressMask (6) - a route's prefix/length must match the prefix length of the prefix-list entry and the bitwise logical AND of the route address and the mask must match the bitwise logical AND from the prefix-list address and the mask. The address mask must be specified in a corresponding entry in the tRPOperPfxListAddressMaskTable.