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IPv6 Addressing with EUI-64
Configure IPv6 global unicast on a router-to-router link using EUI-64-derived interface IDs. Enable IPv6 unicast routing, set explicit link-local addresses, and verify that each router auto-forms its 64-bit interface ID from the MAC (FFFE insertion with U/L bit flip). Validate directly-connected reachability only. No routing protocols or static routes.