University College London Huawei Technologies Duesseldorf GmbH This document provides an overview of the "Semantic Addressing and Routing for Future Networks" workshop (SARNET-21), which took place on June 10, 2021, in Paris, France and online as part of the IEEE International Conference on High-Performance Switching and Routing. The main goal of the SARNET-21 workshop was to explore, together with the research community, the use cases and network requirements in the domain of semantic addressing and routing, and identify potential research challenges to be tackled in the future. Note that this document is a report on the proceedings of the SARNET-21 workshop compiled by the authors. It captures the views and positions of the workshop participants as expressed during the workshop.