valorie@valorie-GT60-2PC:/media/valorie/Data/ISOs$ zsync http://cdimage.ubuntu.com/kubuntu/daily-live/20160718/xenial-desktop-amd64.iso.zsync
failed on url http://cdimage.ubuntu.com/kubuntu/daily-live/20160718/xenial-desktop-amd64.iso.zsync
could not read control file from URL http://cdimage.ubuntu.com/kubuntu/daily-live/20160718/xenial-desktop-amd64.iso.zsync
valorie@valorie-GT60-2PC:/media/valorie/Data/ISOs$ rsync -tzhhP rsync://cdimage.ubuntu.com/cdimage/kubuntu/daily-live/20160718/xenial-desktop-amd64.iso
This is an Ubuntu mirror - treat it kindly

receiving file list ... 
rsync: link_stat "/kubuntu/daily-live/20160718/xenial-desktop-amd64.iso" (in cdimage) failed: No such file or directory (2)
0 files to consider
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1655) [Receiver=3.1.1]
valorie@valorie-GT60-2PC:/media/valorie/Data/ISOs$ wget http://cdimage.ubuntu.com/kubuntu/daily-live/20160718/xenial-desktop-amd64.iso
--2016-07-19 01:19:16--  http://cdimage.ubuntu.com/kubuntu/daily-live/20160718/xenial-desktop-amd64.iso
Resolving cdimage.ubuntu.com (cdimage.ubuntu.com)... 2001:67c:1360:8001::1d, 91.189.92.164
Connecting to cdimage.ubuntu.com (cdimage.ubuntu.com)|2001:67c:1360:8001::1d|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2016-07-19 01:19:17 ERROR 404: Not Found.

valorie@valorie-GT60-2PC:/media/valorie/Data/ISOs$