Add public DNS and AdGuard Home integration skill

[Copilot]

Plan: Create Public DNS and AdGuard Integration Rule

• Create skills/integrations/rules/public-dns-and-adguard.md with proper structure
  • Add YAML frontmatter with metadata
  • Add capability rules for browser setup (Chrome/Edge, Firefox)
  • Add capability rules for OS setup (Windows 11, Android, iOS)
  • Add capability rules for AdGuard Home integration
  • Add efficiency rules for Bootstrap DNS configuration
  • Include public DNS server information (IPv4, IPv6, DoH, DoT)
• Run linting to ensure compliance
• Update skills/integrations/SKILL.md to register the new rule
• Address code review feedback
  • Remove (Capability Rules) and (Efficiency Rule) annotations from section headers
  • Convert apple.nextdns.io to proper markdown link
  • Fix misleading "for local servers" phrase in Bootstrap DNS section
• Update Reference section
  • Update NextDNS Setup Guide URL to specific tag
  • Remove invalid NextDNS Public DNS Information link

Original prompt

I need to create a new integration skill file: skills/integrations/rules/public-dns-and-adguard.md.

Please read templates/rule-template.md to understand the Markdown structure (YAML frontmatter, Capability/Efficiency tables).

Then, create the file skills/integrations/rules/public-dns-and-adguard.md using ONLY the specific technical data I have extracted below:

Technical Configuration Data (Use this to generate the content):

1. Public DNS Servers (Anycast):

• IPv4: 45.90.28.0 and 45.90.30.0
• IPv6: 2a07:a8c0:: and 2a07:a8c1::
• DoH Endpoint: https://dns.nextdns.io/
• DoT/Android Hostname: dns.nextdns.io

2. Browser Setup Instructions (Capability Rules):

• Chrome/Edge: Settings -> Privacy and security -> Security -> "Use secure DNS" -> Select "Custom" -> Enter https://dns.nextdns.io/.
• Firefox: Settings -> Privacy & Security -> "Enable DNS over HTTPS" -> Select "Max Protection" -> Choose "NextDNS".

3. Operating System Setup (Capability Rules):

• Windows 11: Settings -> Network & internet -> Wi-Fi/Ethernet -> Hardware properties -> DNS Server Assignment -> Edit.
  • Set IPv4 to 45.90.28.0 / 45.90.30.0.
  • Set IPv6 to 2a07:a8c0:: / 2a07:a8c1::.
  • Set "DNS over HTTPS" to "On (manual template)" and enter https://dns.nextdns.io/.
• Android: Settings -> Network & internet -> Private DNS -> Select "Private DNS provider hostname" -> Enter dns.nextdns.io.
• iOS: Requires installing a .mobileconfig profile (mention that users should generate this from the apple.nextdns.io generator).

4. AdGuard Home Integration (Capability Rules):

• Upstream DNS Servers: Configure to use specific endpoints for load balancing:
  • https://dns1.nextdns.io/
  • https://dns2.nextdns.io/
  • (Note: Use tls:// or quic:// prefixes if preferred).
• Bootstrap DNS Servers: Must be set to public resolvers to ensure ECS (EDNS Client Subnet) works correctly for local servers. Use:
  • 8.8.8.8
  • 9.9.9.11
  • 208.67.222.222

Output Requirements:

• Format the data into the standard "Capability Rules" and "Efficiency Rules" tables as per the template.
• Put the "Bootstrap DNS" tip for AdGuard under Efficiency Rules.

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[Copilot]

Pull request overview

This PR adds comprehensive documentation for integrating NextDNS public DNS servers and AdGuard Home upstream configuration. The documentation covers public DNS endpoints (IPv4/IPv6), encrypted DNS protocols (DoH/DoT), browser and OS configuration instructions, and AdGuard Home setup with critical bootstrap DNS requirements for EDNS Client Subnet (ECS) support.

Changes:

• New integration skill document providing NextDNS public DNS server configuration and AdGuard Home upstream setup
• Updated skill registry to include the new public DNS and AdGuard Home integration capability rule

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
skills/integrations/rules/public-dns-and-adguard.md	Adds complete integration guide covering public DNS anycast endpoints, browser/OS configuration steps, and AdGuard Home upstream/bootstrap DNS setup
skills/integrations/SKILL.md	Registers new capability rule for public DNS and AdGuard Home integration

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[tuanductran]

Hi @copilot, pls update the "Reference" section in skills/integrations/rules/public-dns-and-adguard.md.

Specific Tasks:

1. Update URL: Change the link for [NextDNS Setup Guide] from https://help.nextdns.io to the more specific tag: https://help.nextdns.io/tag/setup.
2. Delete Entry: Remove the line [NextDNS Public DNS Information](https://my.nextdns.io/start) entirely as it is invalid.

Expected Result for Reference Section:

## Reference

- [NextDNS Setup Guide](https://help.nextdns.io/tag/setup)
- [AdGuard Home Configuration](https://github.com/AdguardTeam/AdGuardHome/wiki/Configuration)
- [Apple Configuration Generator](https://apple.nextdns.io)

[Copilot]

Hi @copilot, pls update the "Reference" section in skills/integrations/rules/public-dns-and-adguard.md.

Specific Tasks:...

Updated the Reference section as requested. Changes made in commit 7230726:

1. Changed NextDNS Setup Guide URL to https://help.nextdns.io/tag/setup
2. Removed the invalid NextDNS Public DNS Information link