# 1.21.3-do.0

DigitalOcean Kubernetes (DOKS) is a Kubernetes service with a fully managed control plane, high availability, and autoscaling. DOKS integrates with standard Kubernetes toolchains and DigitalOcean’s load balancers, volumes, CPU and GPU Droplets, API, and CLI.

- Upgrades to system components:

  - Updated to [Kubernetes v1.21.3](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.21.md#v1213)
  - Updated to [DO CCM v0.1.34](https://github.com/digitalocean/digitalocean-cloud-controller-manager/releases/tag/v0.1.34)
  - Updated to [DO CSI v2.1.2](https://github.com/digitalocean/csi-digitalocean/releases/tag/v2.1.2)
  - Updated to [containerd v1.4.9](https://github.com/containerd/containerd/releases/tag/v1.4.9)
- Disabled the Cilium `enabled-bpf-masquerade` option to address Cilium error on clusters using `hostNetwork`
- Ensured that ARP cache entries marked as `PERMANENT` are cleared by Cilium before establishing connections with a new control plane Droplet