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9th chunk of `content/manuals/desktop/previous-versions/2.x-mac.md`
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* Docker Desktop now allows users to expose privileged UDP ports. [docker/for-mac#3775](https://github.com/docker/for-mac/issues/3775)
* Fixed an issue where running some Docker commands can fail if you are not using Credential Helpers. [docker/for-mac#3785](https://github.com/docker/for-mac/issues/3785)
* Changed the host's kubernetes context so that `docker run -v .kube:kube ... kubectl` works.
* Restricted the `cluster-admin` role on local Kubernetes cluster to `kube-system` namespace.
* Reduced the VM startup time. swap is not created every time a virtual machine boots.
* Fixed Kubernetes installation with VPNkit subnet.
* Fixed a bug where the process output was not redirected to stdout when gathering diagnostics on Windows, which sometimes resulted in a crash.
* Added `/etc/machine-id` to the virtual machine. Fixes [docker/for-mac#3554](https://github.com/docker/for-mac/issues/3554).
* Docker Desktop does not send DNS queries for `docker-desktop.<domain>` every 10s. It now relies on the host’s DNS domain search order rather than trying to replicate it inside the VM.
* Removed the ability to log in using email address as a username as the Docker command line does not support this.
* Docker Desktop now allows running a Docker registry inside a container. Fixes [docker/for-mac#3611](https://github.com/docker/for-mac/issues/3611).
* Fixed a stability issue with the DNS resolver.
* Docker Desktop truncates UDP DNS responses which are over 512 bytes in sizes.
* Fixed port 8080 that was used on localhost when starting Kubernetes. Fixes [docker/for-mac#3522](https://github.com/docker/for-mac/issues/3522).
* Improved error messaging: Docker Desktop does not prompt users to run diagnostics, or to reset to factory default when it is not appropriate.
* Kubernetes: Docker Desktop now uses the default maximum number of pods for kubelet. [docker/for-mac#3453](https://github.com/docker/for-mac/issues/3453).
* Fixed DockerHelper crash. [docker/for-mac#3470](https://github.com/docker/for-mac/issues/3470).
* Fixed binding of privileged ports with specified IP. [docker/for-mac#3464](https://github.com/docker/for-mac/issues/3464)
* Fixed service log collection in diagnostics.
* Docker Desktop now gathers `/etc/hosts` to help with diagnostics.
* When two services have a common exposed port, Docker Desktop now exposes the available ports for the second service. [docker/for-mac#3438](https://github.com/docker/for-mac/issues/3438).
Title: Docker Desktop Bug Fixes and Improvements
Summary
This section details bug fixes and improvements in Docker Desktop, addressing issues related to UDP ports, Credential Helpers, Kubernetes context and installation, VM startup time, process output redirection, DNS queries, Docker registry in a container, DNS resolver stability, UDP DNS responses, port 8080 usage, error messaging, Kubernetes kubelet pod limits, DockerHelper crashes, privileged port binding, service log collection, and service port exposure. It also includes diagnostic improvements like gathering /etc/hosts.