If you use the DNT extension, you can easily create the do_not_track data source in your Data Layer tab in Tealium IQ and map this to your preferred analytics tool. Make sure the data source is defined as "UDO Variable" type and ensure that the name is "do_not_track".
Since the DNT extension was only released last night, I expect there will be a follow-up community post from the education team which will fully explain the different use cases and how you can make the most of the extension.
Hope this helps!
Check out our new Swift integration library for iOS, macOS, tvOS and watchOS: https://github.com/Tealium/tealium-swift with updated