If I have an IPv6 address, how can I find its MAC address?

How to Locate a Device Using a MAC Address

How to Find your Mac Address on Ubuntu - Pi My Life Up

sed - How to use shell to derive an IPv6 address from a MAC address? - Unix & Linux Stack Exchange

IPv6 Stateless Address Auto-configuration (SLAAC)

How to Find Your MAC Address on Windows 10

IPv6 MAC addresses and usage in firewall policies, FortiGate / FortiOS 7.4.3

Mac address / IPv6 does not match mac address for IPv4 - General - Pi-hole Userspace

With MAC addresses embedded inside IPv6, how will an individual's security be protected? - Quora

IPv6 address - Wikipedia