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29th chunk of `content/manuals/desktop/previous-versions/edge-releases-mac.md`
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**New**

* Improved support for macOS 10.12 Sierra

**Upgrades**

* Linux kernel 4.4.20
* AUFS 20160905

**Bug fixes and minor changes**

* Fixed communications glitch when UI talks to `com.docker.vmnetd`. Fixes [docker/for-mac#90](https://github.com/docker/for-mac/issues/90)

* UI fix for macOs 10.12

* Windows open on top of full screen app are available in all spaces

* Reporting a bug, while not previously logged into GitHub now works

* When a diagnostic upload fails, the error is properly reported

* `docker-diagnose` displays and records the time the diagnosis was captured

* Ports are allowed to bind to host addresses other than `0.0.0.0` and `127.0.0.1`. Fixes issue reported in [docker/for-mac#68](https://github.com/docker/for-mac/issues/68).

* We no longer compute the container folder in `com.docker.vmnetd`. Fixes [docker/for-mac#47](https://github.com/docker/for-mac/issues/47).

**Known Issues**

* `Docker.app` sometimes uses 200% CPU after macOS wakes up from sleep mode. The
issue is being investigated. The workaround is to restart Docker.app.

* There are a number of issues with the performance of directories bind-mounted with `osxfs`. In particular, writes of small blocks and
traversals of large directories are currently slow. Additionally, containers
that perform large numbers of directory operations, such as repeated scans of
large directory trees, may suffer from poor performance. More information is
available in [Known Issues](/manuals/desktop/troubleshoot-and-support/troubleshoot/known-issues.md) in Troubleshooting.

* Under some unhandled error conditions, `inotify` event delivery can fail and become permanently disabled. The workaround is to restart `Docker.app`.

### Beta 25 Release Notes (2016-09-07 1.12.1-beta25)

**Upgrades**

* Experimental support for macOS 10.12 Sierra (beta)

**Bug fixes and minor changes**

* VPNKit supports search domains
* Entries from `/etc/hosts` should now resolve from within containers
* osxfs: fix thread leak

**Known issues**

* Several problems have been reported on macOS 10.12 Sierra and are being
investigated. This includes failure to launch the app and being unable to
upgrade to a new version.

* Docker.app sometimes uses 200% CPU after macOS wakes up from sleep mode. The
issue is being investigated. The workaround is to restart Docker.app

* There are a number of issues with the performance of directories bind-mounted
with `osxfs`. In particular, writes of small blocks and traversals of large
directories are currently slow. Additionally, containers that perform large
numbers of directory operations, such as repeated scans of large directory
trees, may suffer from poor performance. More information is available in
[Known Issues](/manuals/desktop/troubleshoot-and-support/troubleshoot/known-issues.md) in Troubleshooting.

* Under some unhandled error conditions, `inotify` event delivery can fail and become permanently disabled. The workaround is to restart Docker.app.

### Beta 24 Release Notes (2016-08-23 1.12.1-beta24)

**Upgrades**

* Docker 1.12.1
* Docker Machine 0.8.1
* Linux kernel 4.4.19
* AUFS 20160822

**Bug fixes and minor changes**

* osxfs: fixed a malfunction of new directories that have the same name as an old directory that is still open

* osxfs: rename events now trigger DELETE and/or MODIFY `inotify` events (saving with TextEdit works now)

* slirp: support up to 8 external DNS servers

* slirp: reduce the number of sockets used by UDP NAT, reduce the probability that NAT rules will time out earlier than expected

* The app warns user if BlueStacks is installed (potential kernel panic)

**Known issues**

* Several problems have been reported on macOS 10.12 Sierra and are being investigated. This includes failure to launch the app and being unable to upgrade to a new version.

* `Docker.app` sometimes uses 200% CPU after macOS wakes up from sleep mode.  The issue is being investigated. The workaround is to restart `Docker.app`.

* There are a number of issues with the performance of directories bind-mounted with `osxfs`. In particular, writes of small blocks and traversals of large

Title: Docker Beta Release Notes: Beta 26 to Beta 24
Summary
These release notes cover Docker Beta versions from Beta 26 to Beta 24, focusing on improvements and fixes. Beta 26 introduces better macOS Sierra support, kernel and AUFS upgrades, and fixes for UI glitches, window behavior, bug reporting, and port binding issues. Known issues include high CPU usage after sleep mode and performance issues with `osxfs`. Beta 25 upgrades experimental Sierra support and addresses VPNKit, `/etc/hosts` resolution, and `osxfs` thread leaks. Known problems persist on Sierra. Beta 24 upgrades Docker, Docker Machine, kernel, and AUFS. Fixes address `osxfs` malfunctions, `inotify` events, slirp DNS support, and UDP NAT socket usage. A warning is added for BlueStacks installation due to potential kernel panics. Known issues related to Sierra, high CPU usage, and `osxfs` performance remain.