diff --git a/device/peer.go b/device/peer.go
index 02e145c..c2397cc 100644
--- a/device/peer.go
+++ b/device/peer.go
@@ -140,6 +140,11 @@ func (peer *Peer) SendBuffer(buffer []byte) error {
 	defer peer.device.net.RUnlock()
 
 	if peer.device.net.bind == nil {
+		// Packets can leak through to SendBuffer while the device is closing.
+		// When that happens, drop them silently to avoid spurious errors.
+		if peer.device.isClosed.Get() {
+			return nil
+		}
 		return errors.New("no bind")
 	}