Android adb pull from specific device; adb pull error: more than one device and emulator

When your computer is connected to multiple devices which communicate via IP based adb the command:

adb pull /mnt/local/your_app/config/config.xml

will no longer work giving an error:

error: more than one device and emulator

You need to specify which device you want to download from:

adb -s 10.0.0.1:5555 pull /mnt/local/your_app/config/config.xml

or

adb -s 0123456789ABCDEF pull /mnt/local/your_app/config/config.xml