M_PROTO1
if (ifp->if_bridgeidx && (m->m_flags & M_PROTO1) == 0) {
if (m->m_flags & M_PROTO1) {
m->m_flags &= ~M_PROTO1;
m->m_flags |= M_PROTO1;
m->m_flags |= M_PROTO1;
m->m_flags |= M_PROTO1;
#define M_COPYFLAGS (M_PKTHDR|M_EOR|M_PROTO1|M_BCAST|M_MCAST|M_CONF|M_COMP|\