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WHAT'S NEW
FreeRTOS-Plus-TCP now has unified IPv4 and IPv6 functionalities and multi-interface support.
Updated library now generally available. See the blog post.
Achieving Unbrickable MCU FOTA for your FreeRTOS-powered Firmware:
The Microvisor IoT Approach. See the blog post.
FreeRTOS 202012 LTS end of support announced.
You can migrate your project to FreeRTOS 202210.01 LTS or subscribe to the FreeRTOS Extended Maintenance Plan. See the blog post.
FreeRTOS website now available in Simplified Chinese
Search and browse content in your preferred language. See the blog post.
New FreeRTOS Long Term Support version now available.
Receive security patches and critical bug fixes on FreeRTOS libraries for two years. 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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