Restores Atmosphère's telemetry blocking in Nextendo mode. Recommended for everyone.
What was wrong
Atmosphère ships its own list of Nintendo telemetry servers and blocks them by default. It maintains that list, so it stays current as Nintendo adds endpoints.
We were switching it off in Nextendo mode.
The setting is add_defaults_to_dns_hosts, and we were passing 0 — meaning Atmosphère's built-in table was not merged, and the only telemetry blocking in effect was the two entries in our own hosts file.
Nintendo mode has had this right since build 10, with a comment explaining exactly why we should defer to Atmosphère's list rather than maintain our own. That reasoning was never carried over to Nextendo mode — the mode you actually play in.
Now it is.
Does this change anything else?
No. Atmosphère's defaults only cover telemetry servers, never the account or game hosts, so there's no conflict with our redirections. The one overlap is the telemetry entries themselves, where both settings block.
Credit
Found and reported publicly by TherealJaw, who was right. Verified before changing anything, and worth saying plainly: this was a real gap and we'd rather hear about it than not.
Update: copy nextendo.nro to sd:/switch/nextendo.nro, then switch to Nextendo mode again so the setting is written.