case NF9_SRC_MASK:
return (len == 1);
case NF9_INPUT_SNMP:
return (len <= 2);
return (len <= 4);
case NF9_L4_DST_PORT:
return (len == 2);
case NF9_IPV4_DST_ADDR:
case NF9_DST_MASK:
case NF9_OUTPUT_SNMP:
case NF9_IPV4_NEXT_HOP:
return (len == 4);
case NF9_SRC_AS: