ngm_macfilter_mac
typedef struct ngm_macfilter_mac *mf_mac_p;
resplen = sizeof(struct ngm_macfilter_macs) + n * sizeof(struct ngm_macfilter_mac);
bcopy(mfp->mf_macs, &ngm_macs->macs[0], n * sizeof(struct ngm_macfilter_mac));
struct ngm_macfilter_mac macs[]; /* Macs table */