- It must wait for an ICMPv6 Router Advertisement message giving permission to use this address.
- It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use.
- It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
- It must send an ICMPv6 Router Solicitation message to request the address of the DNS server.
Explanation: Stateless DHCPv6 or stateful DHCPv6 uses a DHCP server, but Stateless Address Autoconfiguration (SLAAC) does not. A SLAAC client can automatically generate an address that is based on information from local routers via Router Advertisement (RA) messages. Once an address has been assigned to an interface via SLAAC, the client must ensure via Duplicate Address Detection (DAD) that the address is not already in use. It does this by sending out an ICMPv6 Neighbor Solicitation message and listening for a response. If a response is received, then it means that another device is already using this address.
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