At startup, the emulator reads the list of DNS servers that your system is
using. It then stores the IP addresses of up to four servers on this list and
sets up aliases to them on the emulated addresses `10.0.2.3`, `10.0.2.4`,
`10.0.2.5`, and `10.0.2.6`, as needed.

On Linux and macOS, the emulator obtains the DNS server addresses by parsing
the file `/etc/resolv.conf`. On Windows, the emulator obtains the
addresses by calling the `GetNetworkParams()` API. This usually means that the
emulator ignores the content of your `hosts` file (`/etc/hosts` on Linux and
macOS, `%WINDOWS%/system32/HOSTS` on Windows).

## Manually specify DNS servers

When starting the emulator from the command line, you can use the `-dns-server
<serverList>` option to manually specify the addresses of DNS servers to use.

- `<serverList>` is a comma-separated list of server names or IP addresses.
- This option is useful if you encounter DNS resolution problems in the emulated network, such as an "Unknown Host error" message when using the web browser.

    emulator @MyAvd -dns-server 8.8.8.8,8.8.4.4,2001:4860:4860::8888,2001:4860:4860::8844