type HostPortManager interface {
    // Add implements port mappings.
    // id should be a unique identifier for a pod, e.g. podSandboxID.
    // podPortMapping is the associated port mapping information for the pod.
    // natInterfaceName is the interface that localhost uses to talk to the given pod, if known.
    Add(id string, podPortMapping *PodPortMapping, natInterfaceName string) error
    // Remove cleans up matching port mappings
    // Remove must be able to clean up port mappings without pod IP
    Remove(id string, podPortMapping *PodPortMapping) error
}

type PodPortMapping struct {
    Namespace    string
    Name         string
    PortMappings []*PortMapping
    HostNetwork  bool
    IP           net.IP
}

type PortMapping struct {
    HostPort      int32
    ContainerPort int32
    Protocol      v1.Protocol
    HostIP        string
}