Thanks for that information Davidfor. I managed now to work around the problem by re-directing the url to
http://www.msftncsi.com/ncsi.txt
If this url is called with the http-headers from the Kobo Mini, it will generate this following reply.
Code:
HTTP/1.1 200 OK
Content-Length: 14
Date: Tue, 30 Jul 2013 00:02:16 GMT
Connection: keep-alive
Content-Type: text/plain
Cache-Control: max-age=30, must-revalidate
Microsoft NCSI
This can be served trough netcat if one can live with not accessing any other page on that host. To always have this open, I settled for a script loop, but I suppose inetd is more elegant and less likely to blow up in a busy loop.
Code:
while true; do nc -p 80 -l < /root/ncsi.txt; done&