Facing same problem, this has fixed the issue (thanks OP)
Ubuntu 16.04 (4.10.0-42-generic #46~16.04.1-Ubuntu) 3:12.0.1-0ubuntu1~cloud0
*** 3:12.0.1-0ubuntu1~cloud0 500 500 http://ubuntu-cloud.archive.canonical.com/ubuntu xenial-updates/pike/main amd64 Packages 500 http://ubuntu-cloud.archive.canonical.com/ubuntu xenial-updates/pike/main i386 Packages
Facing same problem, this has fixed the issue (thanks OP)
Ubuntu 16.04 (4.10.0-42-generic #46~16.04.1-Ubuntu) 1-0ubuntu1~ cloud0
3:12.0.
*** 3:12.0. 1-0ubuntu1~ cloud0 500 ubuntu- cloud.archive. canonical. com/ubuntu xenial- updates/ pike/main amd64 Packages ubuntu- cloud.archive. canonical. com/ubuntu xenial- updates/ pike/main i386 Packages
500 http://
500 http://