Question: query for Interface MIB "ifInNUcastPkts "

Hi, All
    Now I want to test interface MIB(according to RFC1213), and found that 
ifInNUcastPkts doesn't exist in Linux kernel. The kernel maintain a 
structure "net_device_stats", but it just contain a member named "multicast" 
to show how many multicast packets are received, but no member to show how 
many broadcast packets are received. Also, I think ifInNUcastPkts should 
equal to broadcast + multicast. Or there is some other statistic value to 
show "ifInNUcastPkts"?

RFC1213

  INTERNET CONTROL MESSAGE PROTOCOL

  ifInNUcastPkts OBJECT-TYP
      SYNTAX  Counter
      ACCESS  read-only
      STATUS  mandatory
      DESCRIPTION
              "The number of non-unicast (i.e., subnetwork-
              broadcast or subnetwork-multicast) packets
              delivered to a higher-layer protocol."
      ::= { ifEntry 12 }

Any help is grateful and thanks in advance.

Regards
Wei Dong