Index: head/sys/net/ieee8023ad_lacp.h
===================================================================
--- head/sys/net/ieee8023ad_lacp.h
+++ head/sys/net/ieee8023ad_lacp.h
@@ -292,8 +292,10 @@
 #define LACP_LOCK_ASSERT(_lsc)		mtx_assert(&(_lsc)->lsc_mtx, MA_OWNED)
 
 struct mbuf	*lacp_input(struct lagg_port *, struct mbuf *);
-struct lagg_port *lacp_select_tx_port(struct lagg_softc *, struct mbuf *);
-struct lagg_port *lacp_select_tx_port_by_hash(struct lagg_softc *, uint32_t, uint8_t);
+struct lagg_port *lacp_select_tx_port(struct lagg_softc *, struct mbuf *,
+    int *);
+struct lagg_port *lacp_select_tx_port_by_hash(struct lagg_softc *, uint32_t,
+    uint8_t, int *);
 void		lacp_attach(struct lagg_softc *);
 void		lacp_detach(void *);
 void		lacp_init(struct lagg_softc *);
Index: head/sys/net/ieee8023ad_lacp.c
===================================================================
--- head/sys/net/ieee8023ad_lacp.c
+++ head/sys/net/ieee8023ad_lacp.c
@@ -832,7 +832,8 @@
 }
 
 struct lagg_port *
-lacp_select_tx_port_by_hash(struct lagg_softc *sc, uint32_t hash, uint8_t numa_domain)
+lacp_select_tx_port_by_hash(struct lagg_softc *sc, uint32_t hash,
+    uint8_t numa_domain, int *err)
 {
 	struct lacp_softc *lsc = LACP_SOFTC(sc);
 	struct lacp_portmap *pm;
@@ -842,12 +843,14 @@
 
 	if (__predict_false(lsc->lsc_suppress_distributing)) {
 		LACP_DPRINTF((NULL, "%s: waiting transit\n", __func__));
+		*err = ENOBUFS;
 		return (NULL);
 	}
 
 	pm = &lsc->lsc_pmap[lsc->lsc_activemap];
 	if (pm->pm_count == 0) {
 		LACP_DPRINTF((NULL, "%s: no active aggregator\n", __func__));
+		*err = ENETDOWN;
 		return (NULL);
 	}
 
@@ -879,7 +882,7 @@
 }
 
 struct lagg_port *
-lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m)
+lacp_select_tx_port(struct lagg_softc *sc, struct mbuf *m, int *err)
 {
 	struct lacp_softc *lsc = LACP_SOFTC(sc);
 	uint32_t hash;
@@ -892,7 +895,7 @@
 		hash = m_ether_tcpip_hash(sc->sc_flags, m, lsc->lsc_hashkey);
 
 	numa_domain = m->m_pkthdr.numa_domain;
-	return (lacp_select_tx_port_by_hash(sc, hash, numa_domain));
+	return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, err));
 }
 
 /*
Index: head/sys/net/if_lagg.c
===================================================================
--- head/sys/net/if_lagg.c
+++ head/sys/net/if_lagg.c
@@ -1763,6 +1763,7 @@
 	struct lagg_port *lp;
 	struct lagg_lb *lb;
 	uint32_t hash, p;
+	int err;
 
 	sc = ifp->if_softc;
 
@@ -1783,7 +1784,7 @@
 		    flowtype == M_HASHTYPE_NONE)
 			return (NULL);
 		hash = flowid >> sc->flowid_shift;
-		return (lacp_select_tx_port_by_hash(sc, hash, numa_domain));
+		return (lacp_select_tx_port_by_hash(sc, hash, numa_domain, &err));
 	default:
 		return (NULL);
 	}
@@ -2580,12 +2581,13 @@
 lagg_lacp_start(struct lagg_softc *sc, struct mbuf *m)
 {
 	struct lagg_port *lp;
+	int err;
 
-	lp = lacp_select_tx_port(sc, m);
+	lp = lacp_select_tx_port(sc, m, &err);
 	if (lp == NULL) {
 		if_inc_counter(sc->sc_ifp, IFCOUNTER_OERRORS, 1);
 		m_freem(m);
-		return (ENETDOWN);
+		return (err);
 	}
 
 	/* Send mbuf */