[iptables] how to filter these packets using iptables?

https://paste.opensuse.org/pastes/910bc75e7e34

These packets seems to have no particular utility (I configured my home network in IPv4 only – the router and all the computers hae IPv6 disabled), so I wanted to know how to filter such packets…

You could start with actually showing these packets, not some lines of text without any explanation.