@@ -42,14 +42,6 @@ const (

 	DefaultGatewayV6AuxKey = "DefaultGatewayIPv6"

 )

-type defaultBridgeNetworkConflict struct {

-	ID string

-}

-

-func (d defaultBridgeNetworkConflict) Error() string {

-	return fmt.Sprintf("Stale default bridge network %s", d.ID)

-}

-

 type (

 	iptableCleanFunc   func() error

 	iptablesCleanFuncs []iptableCleanFunc

@@ -674,15 +666,7 @@ func (d *driver) CreateNetwork(id string, option map[string]interface{}, nInfo d

 	// check network conflicts

 	if err = d.checkConflict(config); err != nil {

-		nerr, ok := err.(defaultBridgeNetworkConflict)

-		if !ok {

-			return err

-		}

-		// Got a conflict with a stale default network, clean that up and continue

-		log.G(context.TODO()).Warn(nerr)

-		if err := d.deleteNetwork(nerr.ID); err != nil {

-			log.G(context.TODO()).WithError(err).Debug("Error while cleaning up network on conflict")

-		}

+		return err

 	}

 	// there is no conflict, now create the network

@@ -700,15 +684,6 @@ func (d *driver) checkConflict(config *networkConfiguration) error {

 		nwConfig := nw.config

 		nw.Unlock()

 		if err := nwConfig.Conflicts(config); err != nil {

-			if nwConfig.DefaultBridge {

-				// We encountered and identified a stale default network

-				// We must delete it as libnetwork is the source of truth

-				// The default network being created must be the only one

-				// This can happen only from docker 1.12 on ward

-				log.G(context.TODO()).Infof("Found stale default bridge network %s (%s)", nwConfig.ID, nwConfig.BridgeName)

-				return defaultBridgeNetworkConflict{nwConfig.ID}

-			}

-

 			return types.ForbiddenErrorf("cannot create network %s (%s): conflicts with network %s (%s): %s",

 				config.ID, config.BridgeName, nwConfig.ID, nwConfig.BridgeName, err.Error())

 		}