The number of input datagrams discarded because
the XNS address in their XNS header's destination
field was not a valid address to be received at
this entity. This count includes invalid
addresses (e.g., 0.0.0.0) and addresses of
unsupported Classes (e.g., Class E). For entities
which are not XNS Gateways and therefore do not
forward datagrams, this counter includes datagrams
discarded because the destination address was not
a local address.