Comment 120 for bug 1522675

bdmurray@clean-xenial-amd64:~$ apt-cache policy update-notifier
update-notifier:
  Installed: 3.168.1
  Candidate: 3.168.7
  Version table:
     3.168.7 500
        500 http://192.168.10.7/ubuntu xenial-updates/main amd64 Packages
        500 http://192.168.10.7/ubuntu xenial-security/main amd64 Packages
 *** 3.168.1 100
        100 /var/lib/dpkg/status
     3.168 500
        500 http://192.168.10.7/ubuntu xenial/main amd64 Packages
bdmurray@clean-xenial-amd64:~$ sudo apt install flashplugin-installer
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  libpango1.0-0 libpangox-1.0-0
Suggested packages:
  x-ttcidfont-conf ttf-mscorefonts-installer ttf-bitstream-vera | ttf-dejavu ttf-xfree86-nonfree xfs
The following NEW packages will be installed:
  flashplugin-installer libpango1.0-0 libpangox-1.0-0
0 upgraded, 3 newly installed, 0 to remove and 556 not upgraded.
Need to get 6,798 B/51.9 kB of archives.
After this operation, 445 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
...
flashplugin-installer: downloading http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20180206.1.orig.tar.gz
Get:1 http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20180206.1.orig.tar.gz [30.5 MB]
Fetched 30.5 MB in 5s (5,929 kB/s)
W: Can't drop privileges for downloading as file '/var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20180206.1.orig.tar.gz' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
Installing from local file /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20180206.1.orig.tar.gz

With the version from -proposed:

Setting up update-notifier-common (3.168.8) ...
flashplugin-installer: processing...
flashplugin-installer: downloading http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20180206.1.orig.tar.gz
Get:1 http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20180206.1.orig.tar.gz [30.5 MB]
Fetched 30.5 MB in 8s (3,434 kB/s)
Installing from local file /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20180206.1.orig.tar.gz
Flash Plugin installed.
Setting up libcairo-perl (1.106-1build1) ...