Index: sys/dev/ixgbe/ixgbe_netmap.c
===================================================================
--- sys/dev/ixgbe/ixgbe_netmap.c	(revision 332481)
+++ sys/dev/ixgbe/ixgbe_netmap.c	(working copy)
@@ -151,7 +151,7 @@
 	struct adapter *adapter = ifp->if_softc;
 
 	IXGBE_CORE_LOCK(adapter);
-	msec_delay(1000);
+	ixgbe_qflush(ifp);
 	adapter->stop_locked(adapter);
 
 	set_crcstrip(&adapter->hw, onoff);