M_BRIDGE_INJECT
if ((m->m_flags & M_BRIDGE_INJECT) == 0 &&
m->m_flags &= ~M_BRIDGE_INJECT;
KASSERT((m->m_flags & M_BRIDGE_INJECT) != 0,
(m->m_flags & M_BRIDGE_INJECT) == 0) {
mc2->m_flags &= ~M_BRIDGE_INJECT;
((m)->m_flags & M_BRIDGE_INJECT) == 0) { \
KASSERT((m->m_flags & M_BRIDGE_INJECT) == 0,
m->m_flags |= M_BRIDGE_INJECT;
m->m_flags &= ~M_BRIDGE_INJECT; \
if (ifp->if_bridge != NULL || (m->m_flags & M_BRIDGE_INJECT) != 0) {