Figured it out:

# nc rechan.eu.org 80
GET / HTTP/1.0
Host: rechan.eu.org

HTTP/1.0 302 Moved Temporarily
Date: Wed, 16 Apr 2008 06:49:14 GMT
Server: Apache
Location: http://byet.org/web/index.html
Cache-Control: max-age=0
Expires: Wed, 16 Apr 2008 06:49:14 GMT
Content-Length: 214
Content-Type: text/html; charset=iso-8859-1
X-Cache: MISS from web5.byetcluster.com
X-Cache-Lookup: MISS from web5.byetcluster.com:80
Via: 1.0 web5.byetcluster.com:80 (squid/2.6.STABLE19)
Connection: close
...

$ nc rechan.eu.org 80
GET / HTTP/1.0
Host: rechan.eu.org
User-Agent: Mozilla

HTTP/1.0 200 OK
...

It's user-agent fuckery.