"n0" is Number 0, the company behind iroh, and the name leaked from iroh's
own preset into this project's user interface, where it explains nothing.
The value is now --transport relay, which says what it does; n0 stays as an
accepted alias.
Also spells out, in the CLI help, the README, the threat model and the
TransportPolicy docs, whose infrastructure is involved: address records are
published to and resolved from dns.iroh.link, and the fallback relays are
Number 0's, in the US, EU and Asia-Pacific.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>