100 /var/lib/dpkg/status
     release a=now
 500 http://security.debian.org testing/updates/main Packages
     release o=Debian,a=testing,l=Debian-Security,c=main
     origin security.debian.org
 500 ftp://download.xs4all.nl testing/main Packages
     release o=Debian,a=testing,l=Debian,c=main
     origin download.xs4all.nl