NPF_NP_CMP_START
#define NPF_NP_CMP_SIZE (sizeof(npf_natpolicy_t) - NPF_NP_CMP_START)
np_raw = (const uint8_t *)np + NPF_NP_CMP_START;
mnp_raw = (const uint8_t *)mnp + NPF_NP_CMP_START;