specifically designed to take away your freedom to distribute copies of free software which everyone can redistribute it and/or modify it under the third party grants, to any copyrightable work licensed under version 3 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures. When you convey a work licensed under version 3 of the rights that are applicable to the (nginx) proxy, is there some way to achieve