kubernetes/staging/src/k8s.io/component-helpers/node/util/ips.go

const cloudProviderNone …

const cloudProviderExternal …

// parseNodeIP implements ParseNodeIPArgument and ParseNodeIPAnnotation
func parseNodeIP(nodeIP string, allowDual, sloppy bool) ([]net.IP, []string, error) { … }

// ParseNodeIPArgument parses kubelet's --node-ip argument.
// If nodeIP contains invalid values, they will be returned as strings.
// This is done also when an error is returned.
// The caller then can decide what to do with the invalid values.
// Dual-stack node IPs are allowed if cloudProvider is unset or `"external"`.
func ParseNodeIPArgument(nodeIP, cloudProvider string) ([]net.IP, []string, error) { … }

// ParseNodeIPAnnotation parses the `alpha.kubernetes.io/provided-node-ip` annotation,
// which can be either a single IP address or a comma-separated pair of IP addresses.
// Unlike with ParseNodeIPArgument, invalid values are considered an error.
func ParseNodeIPAnnotation(nodeIP string) ([]net.IP, error) { … }