M_GET_ALIGNED_HDR
if (M_GET_ALIGNED_HDR(&m, struct ip, true) != 0) {
if (M_GET_ALIGNED_HDR(&m, struct ip6_hdr, true) != 0) {
if (M_GET_ALIGNED_HDR(&m, struct ip, false) != 0) {
if (M_GET_ALIGNED_HDR(&m, struct ip, true) != 0) {
if (M_GET_ALIGNED_HDR(&m, struct ip6_hdr, false) != 0)
if (M_GET_ALIGNED_HDR(&m, struct ip6_hdr, true) != 0) {