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WHAT'S NEW
Simplifying Authenticated Cloud Connectivity for Any Device.
How Wi-Fi and Cellular connectivity modules with ExpressLink can help create secure cloud connected devices. See the blog post.
Designing an energy efficient and cloud-connected IoT solution with CoAP.
A client/server, request/response, UDP-based protocol for efficiency and cloud compatibility. See the blog post.
Introducing FreeRTOS Kernel version 11.0.0:
A Major Release with Symmetric Multiprocessing (SMP) Support. See the blog post.
FreeRTOS Roadmap and Code Contribution process.
The FreeRTOS roadmap and code contribution process are now published here and on GitHub. See the blog post.
OPC-UA over TSN with FreeRTOS.
A development project to give applications consistent access to hardware TSN capabilities. See the blog post.

ND

ND stands for Neighbor Discovery.

The protocol defines five ICMPv6 packet types to perform functions to gather MAC address information for IPv6, similar to the Address Resolution Protocol (ARP). Besides that, it is also responsible for gathering various information required for network communication, including the configuration of local connections and the domain name servers and gateways.

The Neighbor Discovery (ND) is used to obtain MAC address information. FreeRTOS-Plus-TCP (like most, if not all, IP stacks) stores IP address to MAC address mappings in an ND table (sometimes called the ND cache). ND is handled automatically by the TCP/IP stack.

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