Orange Cloud Software Group Holdings, Inc. Nokia Cloud Software Group Holdings, Inc. Verizon Inc Deutsche Telekom Telefonica This document specifies mechanims for hosts to dynamically discover Network Rate-Limit Policies (NRLPs). This information is then passed to applications that might adjust their behaviors accordingly. Networks already support mechanisms to advertize a set of network properties to hosts (e.g., link MTU (RFC 4861) and PREFIX64 (RFC 8781)). This document complements these tools and specifies a Neighbor Discovery option to be used in Router Advertisements (RAs) to communicate NRLPs to hosts. For address family parity, a new DHCP option is also defined. The document also discusses how Provisioning Domains (PvD) can be used to notify hosts with NRLPs.