12.8 多播地址表

第8章，“多播CoAP”，定义了多播的使用。IANA已经安排了如下被用于CoAP节点多播地址：

• IPv4 --“All CoAP Nodes”地址为224.0.1.187，源自“IPv4 Multicast Address Space Registry”。当这个地址用于发现

• IPv6 -- "All CoAP Nodes" address FF0X::FD, from the "IPv6 Multicast Address Space Registry", in the "Variable Scope Multicast Addresses" space (RFC 3307). Note that there is a distinct multicast address for each scope that interested CoAP nodes should listen to; CoAP needs the Link-Local and Site-Local scopes only.