EIGRPv6 retains the same basic core functions as EIGRPv4. For example, both versions still use DUAL to ensure loop-free paths, and both protocols use Multicast packets to send updates – although EIGRPv6 uses IPv6 Multicast address FF02::A instead of the 126.96.36.199 group address used by EIGRPv4. While the same core fundamentals are retained, there are some differences between these versions. Table 10-2 lists the differences between EIGRPv4 and EIGRPv6, or simply and more commonly between EIGRP for IPv4 and EIGRP for IPv6.
EIGRP For IPv4
EIGRP For IPv6 . . .
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