ftp://ftp.uni-kassel.de/Mirrors1/ftp.de.debian.org/debian-security/pool/updates/main/libm/  direct

[DIR]libmusicbrainz-2.1/  direct  520+ twin directories
[DIR]libmusicbrainz-2.0/  direct  480+ twin directories
[DIR]libmail-audit-perl/  direct  390+ twin directories
[DIR]libmailtools-perl/  direct  510+ twin directories
[DIR]libmcrypt/  direct  800+ twin directories