EBT_ARP_OPCODE
#define EBT_ARP_MASK (EBT_ARP_OPCODE | EBT_ARP_HTYPE | EBT_ARP_PTYPE | \
if ((info->bitmask & EBT_ARP_OPCODE) &&
NF_INVF(info, EBT_ARP_OPCODE, info->opcode != ah->ar_op))