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openclaw/docs/cli/dns.md
2026-05-06 00:23:48 -07:00

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---
summary: "CLI reference for `openclaw dns` (wide-area discovery helpers)"
read_when:
- You want wide-area discovery (DNS-SD) via Tailscale + CoreDNS
- You're setting up split DNS for a custom discovery domain (example: openclaw.internal)
title: "DNS"
---
# `openclaw dns`
DNS helpers for wide-area discovery (Tailscale + CoreDNS). Currently focused on macOS + Homebrew CoreDNS.
Related:
- Gateway discovery: [Discovery](/gateway/discovery)
- Wide-area discovery config: [Configuration](/gateway/configuration)
## Setup
```bash
openclaw dns setup
openclaw dns setup --domain openclaw.internal
openclaw dns setup --apply
```
## `dns setup`
Plan or apply CoreDNS setup for unicast DNS-SD discovery.
Options:
- `--domain <domain>`: wide-area discovery domain (for example `openclaw.internal`)
- `--apply`: install or update CoreDNS config and restart the service (requires sudo; macOS only)
What it shows:
- resolved discovery domain
- zone file path
- current tailnet IPs
- recommended `openclaw.json` discovery config
- the Tailscale Split DNS nameserver/domain values to set
Notes:
- Without `--apply`, the command is a planning helper only and prints the recommended setup.
- If `--domain` is omitted, OpenClaw uses `discovery.wideArea.domain` from config.
- `--apply` currently supports macOS only and expects Homebrew CoreDNS.
- `--apply` bootstraps the zone file if needed, ensures the CoreDNS import stanza exists, and restarts the `coredns` brew service.
## Related
- [CLI reference](/cli)
- [Discovery](/gateway/discovery)