When the value of this object is a valid IPX
network and different from a3ipxPolRteNet1, then
this table entries specifies a range of IPX
networks, with the value of a3ipxPolRteNet1
identifying the lower end of the range.
If the value of this object is the same as
a3ipxPolRteNet1, then this table entry
specifies a single IPX network identified by
the value of a3ipxPolRteNet1.