Is ARP used in the IPv6 protocol?

The assertion that ARP is used in the IPv6 protocol is incorrect because IPv6 implements a different approach to resolve the need for address resolution that ARP addresses in IPv4. Instead of ARP, IPv6 uses a mechanism called Neighbor Discovery Protocol (NDP). NDP performs several functions, including address resolution, determining link-layer addresses, and discovering other network nodes.

NDP utilizes ICMPv6 messages to carry out its operations, allowing IPv6 devices to learn about the presence of other devices on the same local link without the need for ARP. This innovation enhances IPv6's capability to manage network address resolution more efficiently and securely, addressing some of the limitations that came with the use of ARP in IPv4.

In summary, the use of Neighbor Discovery Protocol in IPv6 replaces the need for ARP, making it the correct understanding that ARP is not utilized in the IPv6 protocol.