Even though :
access this server with other Linux distros and OSX and the completion works fine.
, I have never encountered this kind of problem using,
Debian 7.8. "wheezy", nor Debian 8 Jessie, at least on my hosting and the server they use. I have not tried others.
In a nut shell , I did some searches, on This:
FTP Server:
Trendnet TS-I300 NAS with FTP/upnp
My guess, is it is a "firmware problem", but also "trendnet" appears to be real expensive junk, mostly intended for use with MS windows, all though they claim to also "comply with linux SMP standards, also I read that they offer very poor support.
The model you show,is rather outdated, and intended for:
MS windows,NT / Windows98
DISCONTINUED PRODUCT
The TS-I300 (Version 1.0R) has been discontinued. For a list of discontinued products, click here.
this server with other Linux distros and OSX and the completion works fine
Which other Linux distros, specificly ?
Debian does not come with certain kinds of non-free firm ware, or "drivers", "other distros" often do. So you may need to read some manuals, or just stick with the "other distros",
I've tried changing a lot of Debian config, but it seems to only affect the completion within the local scope
If you are missing a piece of firmware (non-free firm ware) , you can change configurations to your hearts content, but that will not solve anything.
Here is some information on the "firmware" needed, but also you should NOT download the firmware from there, but try to find it in the Debian repos, (read the manuals on that) if you all ready tried installing firmware, via a "wire less" method, according to this, you all ready have "broken" it.
http://www.trendnet.com/support/support ... 0_TS-I300W
There are more details here:
drivers and firmware for Trendnet TS-I300 NAS with FTP/upnp