$ cat /etc/apt/sources.list.d/ddebs.list
deb http://ddebs.ubuntu.com trusty main restricted universe multiverse
deb http://ddebs.ubuntu.com trusty-updates main restricted universe multiverse
deb http://ddebs.ubuntu.com trusty-proposed main restricted universe multiverse
$ apt-cache policy udev
udev:
Installed: 204-5ubuntu20.11
Candidate: 204-5ubuntu20.11
Version table:
*** 204-5ubuntu20.11 0
500 http://nova.clouds.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
100 /var/lib/dpkg/status
204-5ubuntu20 0
500 http://nova.clouds.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
$ apt-cache policy udev-dbgsym
udev-dbgsym:
Installed: (none)
Candidate: 204-5ubuntu20
Version table:
204-5ubuntu20 0
500 http://ddebs.ubuntu.com/ trusty/main amd64 Packages