nftables rule where IPv6 source and destination addr are the same?

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Subject: nftables rule where IPv6 source and destination addr are the same?
From: "William N." <netfilter@xxxxxxxxxx>
Date: Sat, 1 Jun 2024 18:20:56 -0000
Reply-to: netfilter@xxxxxxxxxxxxxxx

Hi,

I am looking for a way to create a rule triggered when the saddr and
the daddr are link-local the same, e.g.

ip6 saddr fe80::/10 == ip6 daddr fe80::/10 accept

What is the way to do this?

XY: https://www.rfc-editor.org/rfc/rfc4861#section-4.5

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