kubernetes/pkg/kubelet/kubelet_network.go

// providerRequiresNetworkingConfiguration returns whether the cloud provider
// requires special networking configuration.
func (kl *Kubelet) providerRequiresNetworkingConfiguration() bool { … }

// updatePodCIDR updates the pod CIDR in the runtime state if it is different
// from the current CIDR. Return true if pod CIDR is actually changed.
func (kl *Kubelet) updatePodCIDR(ctx context.Context, cidr string) (bool, error) { … }

// GetPodDNS returns DNS settings for the pod.
// This function is defined in kubecontainer.RuntimeHelper interface so we
// have to implement it.
func (kl *Kubelet) GetPodDNS(pod *v1.Pod) (*runtimeapi.DNSConfig, error) { … }