Setting Up Redirections through ADB

The Android Debug Bridge (ADB) tool provides port forwarding, an alternate way for you to set up network redirections. For more information, see Forwarding Ports in the ADB documentation.

Note that ADB does not currently offer any way to remove a redirection, except by killing the ADB server. Configuring the Emulator's DNS Settings

At startup, the emulator reads the list of DNS servers that your system is currently 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 OS X, the emulator obtains the DNS server addresses by parsing the file / etc/resolv.conf. On Windows, the emulator obtains the addresses by calling theGetNetworkParams() API. Note that this usually means that the emulator ignores the content of your "hosts" file (/etc/hosts on Linux/OS X, %WINDOWS%/system32/HOSTS on Windows).

When starting the emulator at the command line, you can also use the -dns-server <serverList> option to manually specify the addresses of DNS servers to use, where <serverList> is a comma-separated list of server names or IP addresses. You might find this option useful if you encounter DNS resolution problems in the emulated network (for example, an "Unknown Host error" message that appears when using the web browser).

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