routeros-mac-telnet SKILL.md skillA
routeros-mac-telnet from tikoci/routeros-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tikoci/routeros-skills/routeros-mac-telnet@git:20261107.e70d1fdPins git:20261107.e70d1fd in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tikoci/routeros-skills
- Path
routeros-mac-telnet/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261107.e70d1fd, committed Nov 7, 2026
- First version recorded
- May 31, 2026
- Size
- 25,729 bytes
- Repository stars
- 89
- License
- MIT
MAC-Telnet protocol (MikroTik Layer-2 terminal/exec over UDP 20561) wire format, session handshake, and MD5 + MTWEI (EC-SRP) authentication. Use when: implementing or debugging a MAC-Telnet client/server, reaching a RouterOS device by MAC address without IP, parsing MAC-Telnet packets, understanding the WinBox-style L2 terminal, deciding between classic MD5 and modern MTWEI auth, or when the user mentions MAC-Telnet, mactelnet, mactelnetd, port 20561, or MTWEI/EC-SRP RouterOS login.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# MAC-Telnet — MikroTik Layer-2 Terminal Protocol MAC-Telnet lets you open an interactive RouterOS terminal (or run commands) addressing a device by its **MAC address** — you do not need to know or route to the target's IP. It works across a Layer-2 broadcast domain even when the target has no IP, a wrong IP, or an IP you cannot route to, which is why WISPs and provisioning tools rely on it. WinBox's "MAC Telnet" and the `tools/mac-telnet` CLI use this protocol family. ## Why This Matters for Agents - It is the only way to get a shell on a freshly-unboxed or misconfigured RouterOS device that has no reachable IP. - The protocol carries its **own 6+6-byte source/destination MAC addressing inside every packet**, independent of the outer UDP/L2 delivery. This trips up implementers who assume normal UDP semantics. - Authentication has **two incompatible modes** — classic **MD5** and modern **MTWEI (EC-SRP over Curve25519)**. Current RouterOS 7.x defaults to MTWEI; getting the mode-detection wrong is the single most common failure. - It is simple enough to implement from scratch for the MD5 path; MTWEI needs an elliptic-curve library. ## Protocol Basics …
Read the whole file at its exact version.
How to install
mdr add tikoci/routeros-skills/routeros-mac-telnet@sha256:a0e1851b57a5a1d0The line at the top of this page pins the label git:20261107.e70d1fd, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_lmmctr54v6ee5slj)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between May 31, 2026 and Nov 7, 2026, about one every 32 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261107.e70d1fd latest | 2026-11-07 | e70d1fd | 25,729 B | A | view · diff |
| git:20260626.c5a9200 | 2026-06-26 | c5a9200 | 25,576 B | A | view · diff |
| git:20260626.c1f205c | 2026-06-26 | c1f205c | 25,563 B | A | view · diff |
| git:20260626.5284858 | 2026-06-26 | 5284858 | 22,133 B | A | view · diff |
| git:20260608.8851493 | 2026-06-08 | 8851493 | 22,113 B | A | view · diff |
| git:20260531.e70a808 | 2026-05-31 | e70a808 | 21,098 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (25729 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
tikoci/routeros-skills · 89 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lmmctr54v6ee5slj GET https://markdownregistry.com/api/v1/resolve?ref=tikoci/routeros-skills/routeros-mac-telnet GET https://markdownregistry.com/api/v1/blob/a0e1851b57a5a1d0d01f3fe863dfbaf6ffb9a6e32c6b691af1a9b9706fb8b9dd
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.