diff --git a/sys/dev/axgbe/if_axgbe_pci.c b/sys/dev/axgbe/if_axgbe_pci.c
--- a/sys/dev/axgbe/if_axgbe_pci.c
+++ b/sys/dev/axgbe/if_axgbe_pci.c
@@ -2415,7 +2415,8 @@
         case IFCOUNTER_OPACKETS:
                 return (pstats->txframecount_gb);
         case IFCOUNTER_OERRORS:
-                return (pstats->txframecount_gb - pstats->txframecount_g);
+                return (if_get_counter_default(ifp, cnt) +
+		    pstats->txframecount_gb - pstats->txframecount_g);
         case IFCOUNTER_IBYTES:
                 return (pstats->rxoctetcount_gb);
         case IFCOUNTER_OBYTES:
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c
--- a/sys/dev/e1000/if_em.c
+++ b/sys/dev/e1000/if_em.c
@@ -4782,8 +4782,8 @@
 		    sc->stats.ruc + sc->stats.roc +
 		    sc->stats.mpc + sc->stats.cexterr);
 	case IFCOUNTER_OERRORS:
-		return (sc->stats.ecol + sc->stats.latecol +
-		    sc->watchdog_events);
+		return (if_get_counter_default(ifp, cnt) +
+		    sc->stats.ecol + sc->stats.latecol + sc->watchdog_events);
 	default:
 		return (if_get_counter_default(ifp, cnt));
 	}
diff --git a/sys/dev/enetc/if_enetc.c b/sys/dev/enetc/if_enetc.c
--- a/sys/dev/enetc/if_enetc.c
+++ b/sys/dev/enetc/if_enetc.c
@@ -1343,7 +1343,8 @@
 	case IFCOUNTER_IERRORS:
 		return (ENETC_PORT_RD8(sc, ENETC_PM0_RERR));
 	case IFCOUNTER_OERRORS:
-		return (ENETC_PORT_RD8(sc, ENETC_PM0_TERR));
+		return (if_get_counter_default(ifp, cnt) +
+		    ENETC_PORT_RD8(sc, ENETC_PM0_TERR));
 	default:
 		return (if_get_counter_default(ifp, cnt));
 	}
diff --git a/sys/dev/ice/ice_lib.c b/sys/dev/ice/ice_lib.c
--- a/sys/dev/ice/ice_lib.c
+++ b/sys/dev/ice/ice_lib.c
@@ -7818,7 +7818,8 @@
 	case IFCOUNTER_OPACKETS:
 		return (es->tx_unicast + es->tx_multicast + es->tx_broadcast);
 	case IFCOUNTER_OERRORS:
-		return (es->tx_errors);
+		return (if_get_counter_default(vsi->sc->ifp, counter) +
+		    es->tx_errors);
 	case IFCOUNTER_COLLISIONS:
 		return (0);
 	case IFCOUNTER_IBYTES:
@@ -7832,7 +7833,8 @@
 	case IFCOUNTER_IQDROPS:
 		return (es->rx_discards);
 	case IFCOUNTER_OQDROPS:
-		return (hs->tx_dropped_link_down);
+		return (if_get_counter_default(vsi->sc->ifp, counter) +
+		    hs->tx_dropped_link_down);
 	case IFCOUNTER_NOPROTO:
 		return (es->rx_unknown_protocol);
 	default:
diff --git a/sys/dev/igc/if_igc.c b/sys/dev/igc/if_igc.c
--- a/sys/dev/igc/if_igc.c
+++ b/sys/dev/igc/if_igc.c
@@ -2599,8 +2599,8 @@
 		    sc->stats.ruc + sc->stats.roc +
 		    sc->stats.mpc + sc->stats.htdpmc);
 	case IFCOUNTER_OERRORS:
-		return (sc->stats.ecol + sc->stats.latecol +
-		    sc->watchdog_events);
+		return (if_get_counter_default(ifp, cnt) +
+		    sc->stats.ecol + sc->stats.latecol + sc->watchdog_events);
 	default:
 		return (if_get_counter_default(ifp, cnt));
 	}
diff --git a/sys/dev/ixgbe/if_ix.c b/sys/dev/ixgbe/if_ix.c
--- a/sys/dev/ixgbe/if_ix.c
+++ b/sys/dev/ixgbe/if_ix.c
@@ -1350,8 +1350,6 @@
 		return (0);
 	case IFCOUNTER_IQDROPS:
 		return (sc->iqdrops);
-	case IFCOUNTER_OQDROPS:
-		return (0);
 	case IFCOUNTER_IERRORS:
 		return (sc->ierrors);
 	default:
diff --git a/sys/dev/ixl/if_ixl.c b/sys/dev/ixl/if_ixl.c
--- a/sys/dev/ixl/if_ixl.c
+++ b/sys/dev/ixl/if_ixl.c
@@ -1785,7 +1785,7 @@
 	case IFCOUNTER_OPACKETS:
 		return (vsi->opackets);
 	case IFCOUNTER_OERRORS:
-		return (vsi->oerrors);
+		return (if_get_counter_default(ifp, cnt) + vsi->oerrors);
 	case IFCOUNTER_COLLISIONS:
 		/* Collisions are by standard impossible in 40G/10G Ethernet */
 		return (0);
@@ -1800,7 +1800,7 @@
 	case IFCOUNTER_IQDROPS:
 		return (vsi->iqdrops);
 	case IFCOUNTER_OQDROPS:
-		return (vsi->oqdrops);
+		return (if_get_counter_default(ifp, cnt) + vsi->oqdrops);
 	case IFCOUNTER_NOPROTO:
 		return (vsi->noproto);
 	default:
diff --git a/sys/net/iflib.c b/sys/net/iflib.c
--- a/sys/net/iflib.c
+++ b/sys/net/iflib.c
@@ -3646,6 +3646,12 @@
 			bus_dmamap_unload(buf_tag, map);
 			DBG_COUNTER_INC(encap_txq_avail_fail);
 			DBG_COUNTER_INC(encap_txd_encap_fail);
+			if (ctx->ifc_sysctl_simple_tx) {
+				*m_headp = m_head = iflib_remove_mbuf(txq);
+				m_freem(*m_headp);
+				DBG_COUNTER_INC(tx_frees);
+				*m_headp = NULL;
+			}
 			if ((txq->ift_task.gt_task.ta_flags & TASK_ENQUEUED) == 0)
 				GROUPTASK_ENQUEUE(&txq->ift_task);
 			return (ENOBUFS);
@@ -4298,6 +4304,10 @@
 		ifmp_ring_check_drainage(txq->ift_br, TX_BATCH_SIZE);
 		m_freem(m);
 		DBG_COUNTER_INC(tx_frees);
+		if (err == ENOBUFS)
+			if_inc_counter(ifp, IFCOUNTER_OQDROPS, 1);
+		else
+			if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
 	}
 
 	return (err);
@@ -7141,6 +7151,11 @@
 		bytes_sent += m->m_pkthdr.len;
 		mcast_sent += !!(m->m_flags & M_MCAST);
 		(void)iflib_txd_db_check(txq, true);
+	} else {
+		if (error == ENOBUFS)
+			if_inc_counter(ifp, IFCOUNTER_OQDROPS, 1);
+		else
+			if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
 	}
 	(void)iflib_completed_tx_reclaim(txq, RECLAIM_THRESH(ctx));
 	mtx_unlock(&txq->ift_mtx);