What is my ipv4 address mac4/14/2023 ![]() A node that wants to learn a link-layer address for a particular IP address sends a Neighbor Solicitation to the according link-local solicited-node multicast address - there is no broadcast for IPv6 any more.įor example, if the address in question is 2001:db8::0011:2233:4455:6677, then the according solicited-node multicast address is ff02::1:ff55:6677, and the according ethernet multicast address is 33:33:ff:55:66:77. The NDP provides two message types that are of interest here: Neighbor Solicitation and Neighbor Advertisement. Thus, you must not ignore ICMPv6 and filter it away, as is the custom with legacy IP. ![]() The mapping between layer 2 and IPv6 addresses is done by the Neighbor Discovery Protocol (NDP), which is sent over ICMPv6. To begin with, there is no such thing as ARPv6. ![]() Since the question was tagged with IPv6, I'll answer for that because IPv6 is very different from IPv4. ![]()
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