"Benefits of IPv6 for IoT[..]Efficient Auto-Configuration[..]IPv6 incorporates stateless address autoconfiguration (SLAAC), a mechanism that allows devices to automatically configure their own IP addresses without the need for manual intervention or a centralized DHCP server. This simplifies the deployment and management of large-scale IoT networks, where manually configuring each device would be impractical."
https://interlir.com/2024/08/01/integrating-ipv6-into-iot-devices-and-networks/