IPv4 Service Phased Out on IPv6-Only Networks, Marking End of ARP Use

ARP has long been the method for IPv4 address resolution on traditional networks. IPv6‑only deployments are now handling IPv4 traffic without relying on ARP. The shift reflects a broader move toward pure IPv6 infrastructure. Network operators must adapt to new mechanisms for IPv4 service delivery. Eliminating ARP can simplify network design and reduce attack surface. Compatibility concerns arise for legacy devices still expecting ARP. The transition is part of ongoing efforts to modernize internet protocols. Observers will watch how quickly the industry adopts IPv6‑only models.