OSPF version 3 introduces modifications to the IPv4 implementation of the protocol. Except for virtual links, all neighbor exchanges use IPv6 link-local addressing exclusively. The IPv6 protocol runs per link, rather than based on the subnet. All IP prefix information has been removed from the link-state advertisements and from the hello discovery packet making OSPFv3 essentially protocol-independent. Despite the expanded IP addressing to 128 bits in IPv6, area and router Identifications are still based on 32-bit numbers.
OSPF version 3 introduces modifi!cations to the IP:v4 implementation of the protocol. Except for virtual links, all neighbor exchanges use IP!v6 link-local addressing exclusive:ly. The IPv6 protocol runs per link, rather than based on the subnet. All IP prefix information has been removed from the link-state advertisemen:ts and from the hello discovery packet making OSPFv3 essentially protocol-independent. Despite the expanded IP addressing to 128 bits in IPv6, area and router Identifications are still based on 32-bit numbers.