NPC_IPPROTO_ICMP
[NPC_IPPROTO_ICMP] = "ip proto icmp",
BIT_ULL(NPC_IPPROTO_ICMP);
*features |= BIT_ULL(NPC_IPPROTO_ICMP);
if (features & BIT_ULL(NPC_IPPROTO_ICMP))
req->features |= BIT_ULL(NPC_IPPROTO_ICMP);
req->features |= BIT_ULL(NPC_IPPROTO_ICMP);