The destination IP address of this route. An entry with a
value of 0.0.0.0 is considered a default route.
This object may not take a Multicast (Class D) address
value.
Any assignment (implicit or otherwise) of an instance of
this object to a value x must be rejected if the bitwise
logical-AND of x with the value of the corresponding
instance of the cIpForwardMask object is not equal to x.