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