Yes I tried apt-get -f install. It did nothing: "0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded."
root@xy:/# apt-cache policy
Package files:
100 /var/lib/dpkg/status
release a=now
500
http://security.debian.org/ jessie/updates/main Translation-en
500
http://security.debian.org/ jessie/updates/contrib Translation-en
500
http://security.debian.org/ jessie/updates/contrib amd64 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=contrib
origin
security.debian.org 500
http://security.debian.org/ jessie/updates/main amd64 Packages
release v=8,o=Debian,a=oldstable,n=jessie,l=Debian-Security,c=main
origin
security.debian.org 500 cdrom://[Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 2016 0917-14:25]/ jessie/main Translation-en
500 cdrom://[Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 2016 0917-14:25]/ jessie/contrib Translation-en
500 cdrom://[Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 2016 0917-14:25]/ jessie/main amd64 Packages
origin Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 201609 17-14:25
500 cdrom://[Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 2016 0917-14:25]/ jessie/contrib amd64 Packages
origin Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 201609 17-14:25
Pinned packages:
root@xy:/#
root@xy:/# apt-cache policy php5-sybase
php5-sybase:
Installed: (none)
Candidate: 5.6.30+dfsg-0+deb8u1
Version table:
5.6.30+dfsg-0+deb8u1 0
500
http://security.debian.org/ jessie/updates/main amd64 Packages
root@xy:/#
root@xy:/# apt-cache policy libsybdb5
libsybdb5:
Installed: (none)
Candidate: (none)
Version table:
root@xy:/#
root@xy:/# cat /etc/apt/sources.list
#deb cdrom:[Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 20160917-14:25]/ jessie contrib main
deb cdrom:[Debian GNU/Linux 8.6.0 _Jessie_ - Official amd64 DVD Binary-1 20160917-14:25]/ jessie contrib main
deb
http://security.debian.org/ jessie/updates main contrib
deb-src
http://security.debian.org/ jessie/updates main contrib
# jessie-updates, previously known as 'volatile'
# A network mirror was not selected during install. The following entries
# are provided as examples, but you should amend them as appropriate
# for your mirror of choice.
#
# deb
http://ftp.debian.org/debian/ jessie-updates main contrib
# deb-src
http://ftp.debian.org/debian/ jessie-updates main contrib