Add info about host network support in DD 4.29 (#19654)

* Add info about host network support in DD 4.29

* Review suggestions

* Apply suggestions from code review

Co-authored-by: Allie Sadler <102604716+aevesdocker@users.noreply.github.com>

* Apply review suggestions

* Remove text saying that host networking is a paid feature

---------

Co-authored-by: Allie Sadler <102604716+aevesdocker@users.noreply.github.com>

content/network/drivers/host.md

@@ -31,8 +31,7 @@ Host mode networking can be useful for the following use cases:
 
 This is because it doesn't require network address translation (NAT), and no "userland-proxy" is created for each port.
 
-The host networking driver only works on Linux hosts, and is not supported on
+The host networking driver only works on Linux hosts, but is available as a Beta feature, on Docker Desktop version 4.29 and later.
-Docker Desktop for Mac, Docker Desktop for Windows, or Docker EE for Windows Server.
 
 You can also use a `host` network for a swarm service, by passing `--network host`
 to the `docker service create` command. In this case, control traffic (traffic
@@ -42,10 +41,62 @@ daemon's host network and ports. This creates some extra limitations. For instan
 if a service container binds to port 80, only one service container can run on a
 given swarm node.
 
+## Docker Desktop
+
+Host networking is also supported on Docker Desktop version 4.29 and later for Mac,
+Windows, and Linux as a beta feature.
+
+This feature works in both directions. This means you can
+access a server that is running in a container from your host and you can access
+servers running on your host from any container that is started with host
+networking enabled. TCP as well as UDP are supported as communication protocols.
+
+### Examples
+
+The following command starts netcat in a container that listens on port `8000`:
+
+```console
+$ docker run --rm -it --net=host nicolaka/netshoot nc -lkv 0.0.0.0 8000
+```
+
+Port `8000` will then be available on the host and you can connect to it with the following
+command from another terminal:
+
+```console
+$ nc localhost 8000
+```
+
+What you type in here will then appear on the terminal where the container is
+running.
+
+To access a service running on the host from the container, you can start a container with
+host networking enabled with this command:
+
+```console
+$ docker run --rm -it --net=host nicolaka/netshoot
+```
+
+If you then want to access a service on your host from the container (in this
+example a web server running on port `80`), you can do it like this:
+
+```console
+$ nc localhost 80
+```
+
+### Limitations
+
+The host network feature of Docker Desktop works on layer 4. This means that
+unlike with Docker on Linux, network protocols that operate below TCP or UDP are
+not supported.
+
+Also, the feature doesn't work with Enhanced Container Isolation enabled, since
+isolating your containers from the host and allowing them access to the host
+network contradict each other.
+
 ## Next steps
 
 - Go through the [host networking tutorial](../network-tutorial-host.md)
 - Learn about [networking from the container's point of view](../index.md)
 - Learn about [bridge networks](bridge.md)
 - Learn about [overlay networks](overlay.md)
-- Learn about [Macvlan networks](macvlan.md)
+- Learn about [Macvlan networks](macvlan.md)