I have an IPv6 network at home and I run Roon just fine. The reason the “turn off IPv6” advice persists is that many routers have very poor implementations of IPv6 when it comes to multicast. They all use Linux inside, so it’s just shameful that this amounts to just misconfiguration, but the reality is that they do. Some ISPs turn off these features purposely because their IPTV or other in-home solutions lack IPv6 support, so they get half-broken IPv6 implementations.
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