Same issue when downloading files from the nextcloud UI:
::1 - - [15/Nov/2016:15:26:20 +0100] "GET /nextcloud/remote.php/webdav/movie.mp4?downloadStartSecret=pjpu0984pl3odl9sbz0itqpvi HTTP/1.1" 200 189307 "-" "Mozilla/5.0 (Linux; Ubuntu 16.04) AppleWebKit/537.36 Chromium/54.0.2840.71 Safari/537.36"
127.0.0.1 - - [15/Nov/2016:15:26:27 +0100] "GET /nextcloud/remote.php/webdav/movie.mp4?downloadStartSecret=pjpu0984pl3odl9sbz0itqpvi HTTP/1.1" 401 1194 "-" "Mozilla/5.0 (Linux; Ubuntu 16.04) AppleWebKit/537.36 Chromium/54.0.2840.71 Safari/537.36"
(the first request is issued by webbrowser-app when clicking the "Download" button, the second one is issued by UDM when starting the actual download)
Same issue when downloading files from the nextcloud UI:
::1 - - [15/Nov/ 2016:15: 26:20 +0100] "GET remote. php/webdav/ movie.mp4? downloadStartSe cret=pjpu0984pl 3odl9sbz0itqpvi 54.0.2840. 71 Safari/537.36"
/nextcloud/
HTTP/1.1" 200 189307 "-" "Mozilla/5.0 (Linux; Ubuntu 16.04)
AppleWebKit/537.36 Chromium/
127.0.0.1 - - [15/Nov/ 2016:15: 26:27 +0100] "GET remote. php/webdav/ movie.mp4? downloadStartSe cret=pjpu0984pl 3odl9sbz0itqpvi 54.0.2840. 71 Safari/537.36"
/nextcloud/
HTTP/1.1" 401 1194 "-" "Mozilla/5.0 (Linux; Ubuntu 16.04)
AppleWebKit/537.36 Chromium/
(the first request is issued by webbrowser-app when clicking the "Download" button, the second one is issued by UDM when starting the actual download)