"Should you ever operate your recursive resolver on only one network? Specifically, should it be limited to the IPv4 or IPv6 network? The general answer for the year 2025 is: NO, you shouldn't."

I wholeheartedly disagree. When given the choice between our ISP's DNS, DNS served by a for-profit company that wants to be a monopoly (such as Cloudflare or Google), or running your own DNSSEC enabled, fully recursive DNS server, you should absolutely run your own, if you're even slightly technical.

If your network is only IPv6, then you already have plenty of issues with general Internet use and should know your caveats. If you're using only IPv4, then you know to run BIND with "-4".

Either way, if you only have one or the other, then you have much more control over what happens when you run your own recursive resolver, regardless of whether it's BIND, Unbound or something else.

The author may've made some money being slightly passive aggressive about running BIND and pretending to not know about "-4", but that's more a self own than a slight on BIND, in my opinion.