# Uninvited Guest

**Category:** De Monne Breach

**Points:** 25

## Description

\<iframe src="" style="background-image: url('https://deadface.sfo3.cdn.digitaloceanspaces.com/2026/img/wayfinder/demonnebreach.png');background-size:cover;background-position:center center;background-origin:content-box;background-repeat:no-repeat;background-color:rgba(40, 40, 40,0);min-height:80px;height:130px;width:100%;padding:10px;border:none" title="Thumbnail">\</iframe>
\<sup>Created By: \<code>@syyntax\</code>\</sup>

Nathan's workstation asked the local network to resolve a file-server name. Which corporate IPv4 address supplied the suspicious answer?

Submit the flag as `deadface{IP}`.

[Download PCAP](https://deadface.sfo3.cdn.digitaloceanspaces.com/2026/challenges/for/dctf26-for/demonne.pcap)(7.5MB)\<br>
\<sup>SHA256: `a717623237abefb2fc061d6df8f6e9d1391f066f5ac448042b5eb72d41a8ddb3`\</sup>

## Services

- [https://deadface.sfo3.cdn.digitaloceanspaces.com](https://deadface.sfo3.cdn.digitaloceanspaces.com)