You can't use shell features in the variables that are read by
Packages::Config. security_ftpsite is such a variable.
#ftproot=/org/ftp.root
ftpsite=http://archive.ubuntu.com/ubuntu
#ftproot=/org/ftp.root
ftpsite=http://archive.ubuntu.com/ubuntu
-security_ftpsite=$ftpsite
+security_ftpsite=http://archive.ubuntu.com/ubuntu
ddtp_ftpsite=http://ddtp.debian.net/debian
wget_cmd="wget --no-verbose --tries=2 --timeout=60"
ddtp_ftpsite=http://ddtp.debian.net/debian
wget_cmd="wget --no-verbose --tries=2 --timeout=60"