3.1.b (iii) ND, RS/RA IPv6 address resolution. In IPv4 we had arp, to facilitate layer 2 communication. In IPv6 we have ICMPv6 neighbor discovery (ND). The neighbor discovery protocol has two purposes: 1. For discovering and tracking other IPv6 hosts 2. For automatic address configuration ND uses 5 ICMPv6 messages. neighbor solicitation neighbor advertisement router …