The GE value of the prefix. GE and LE allow the range of the prefix length to be matched on to be varied. The range is assumed to be from ge-value to the address length of the family if only the ge attribute is specified, and from len to le-value if only the le attribute is specified. A specified ge-value and/or le-value must satisfy the following condition: len <= ge-value <= le-value <= address length of family.