func (a *Allocator) Allocate(ip net.IP) error {
	return a.AllocateService(nil, ip)
}

// AllocateService attempts to reserve the provided IP. ErrNotInRange or
// ErrAllocated will be returned if the IP is not valid for this range
// or has already been reserved.  ErrFull will be returned if there
// are no addresses left.
func (a *Allocator) AllocateService(svc *api.Service, ip net.IP) error {

	ok := c.tree.DeletePrefix(cidr)
	if ok {
		klog.V(3).Infof("CIDR %s deleted", cidr)
	}
}

func (c *MetaAllocator) AllocateService(service *api.Service, ip net.IP) error {
	allocator, err := c.getAllocator(ip)
	if err != nil {
		return err
	}
	return allocator.AllocateService(service, ip)
}

func (c *MetaAllocator) Allocate(ip net.IP) error {
	allocator, err := c.getAllocator(ip)
	if err != nil {

				// TODO: simplify this and avoid all this duplicate code
				svcAllocator, ok := allocator.(*ipallocator.MetaAllocator)
				if ok {
					err = svcAllocator.AllocateService(service, parsedIP)
				} else {
					err = allocator.Allocate(parsedIP)
				}
			} else {
				err = allocator.Allocate(parsedIP)
			}
			if err != nil {