code: func (sb *sandbox) populateLoadBalancers(ep *endpoint) {
  	// This is an interface less endpoint. Nothing to do.
  	if ep.Iface() == nil {
  		return
  	}
  
  	n := ep.getNetwork()
  	eIP := ep.Iface().Address()
  
  	if n.ingress {
  		if err := addRedirectRules(sb.Key(), eIP, ep.ingressPorts); err != nil {
  			logrus.Errorf("Failed to add redirect rules for ep %s (%.7s): %v", ep.Name(), ep.ID(), err)
  		}
  	}
  }
docs: // Populate all loadbalancers on the network that the passed endpoint
  // belongs to, into this sandbox.