npf_ifmap_t
npf_ifmap_t *ifmap = &npf->ifmap[i];
npf_ifmap_t *ifmap;
const npf_ifmap_t *ifmap = &npf->ifmap[i];
const size_t nbytes = sizeof(npf_ifmap_t) * NPF_MAX_IFMAP;
const size_t nbytes = sizeof(npf_ifmap_t) * NPF_MAX_IFMAP;