br_rports_have_mc_router
if (!brmctx->multicast_router || !br_rports_have_mc_router(brmctx))
!br_rports_have_mc_router(brmctx1) &&
!br_rports_have_mc_router(brmctx2) &&
if (br_rports_have_mc_router(&v_opts->br_mcast_ctx)) {