code: func (n *bridgeNetwork) isolateNetwork(others []*bridgeNetwork, enable bool) error {
  	n.Lock()
  	thisConfig := n.config
  	n.Unlock()
  
  	if thisConfig.Internal {
  		return nil
  	}
  
  	// Install the rules to isolate this network against each of the other networks
  	return setINC(thisConfig.BridgeName, enable)
  }
docs: // Install/Removes the iptables rules needed to isolate this network
  // from each of the other networks