bpf_mtap_hdr
void bpf_mtap_hdr(struct bpf_if *, caddr_t, u_int, struct mbuf *, u_int);
bpf_mtap_hdr(the_if->if_bpf, (caddr_t)eh,
bpf_mtap_hdr(the_if->if_bpf, (caddr_t)fake_eh,
bpf_mtap_hdr(ifn->if_bpf, (char *)&hdr, PFLOG_HDRLEN, m,