Twin directories of libc:

[DIR]  ftp://ftp.ucr.ac.cr/pub/Unix/linux/distribuciones/ubuntu/pool/universe/libc/
[DIR]  ftp://208.209.50.19/pub/linux/ubuntu/pool/universe/libc/
[DIR]  ftp://ftp.gnome.org/mirror/debian-misc/debian-kfreebsd/pool-armel/main/libc/
[DIR]  ftp://ftp.ar.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.kaist.ac.kr/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp12.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp6.tw.freebsd.org/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.cse.buffalo.edu/mirror/BSD/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://208.209.50.19/pub/.vol02/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.informatik.rwth-aachen.de/pub/mirror/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.cerias.purdue.edu/pub/os/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.lucky.net/pub/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.uni-giessen.de/pub/linux/debian/pool/main/libc/
[DIR]  ftp://ftp.udc.es/mirror/NetBSD/NetBSD-release-2-0/src/lib/libc/
[DIR]  ftp://ftp.udc.es/mirror/NetBSD/NetBSD-release-2-0/src/regress/lib/libc/
[DIR]  ftp://ftp.gnome.org/mirror/debian-misc/debian-kfreebsd/pool-kfreebsd-amd64/main/libc/
[DIR]  ftp://ftp.gnome.org/mirror/debian-misc/debian-kfreebsd/pool-kfreebsd-i386/main/libc/
[DIR]  ftp://ftp.dei.uc.pt/pub/linux/ubuntu/ubuntu/pool/universe/libc/
[DIR]  ftp://ftp.rz.tu-bs.de/pub/mirror/.mounts/sdc1/archive.ubuntu.com/ubuntu/pool/universe/libc/
[DIR]  ftp://ftp.lv.kernel.org/ubuntu/pool/universe/libc/
[DIR]  ftp://ftp.tuke.sk/ubuntu/pool/universe/libc/
[DIR]  ftp://ftp.man.szczecin.pl/pub/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.cesnet.cz/.vol/archive.ubuntu.com/mirror/ubuntu/pool/universe/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.ucsd.edu/mirror2/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.mtu.ru/.3/FreeBSD/development/FreeBSD-CVS/src/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-4-0/src/common/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-4-0/src/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-4-0/src/regress/lib/libc/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-current/src/lib/libc/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/regress/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-current/src/regress/lib/libc/
[DIR]  ftp://ftp.mtu.ru/.4/NetBSD/NetBSD-release-3-1/src/lib/libc/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-1/src/lib/libc/
[DIR]  ftp://ftp.mtu.ru/.4/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-1/src/regress/lib/libc/
[DIR]  ftp://ftp.imt-mrs.fr/pub5/debian/pool/main/libc/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-0/src/lib/libc/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-release-3-0/src/regress/lib/libc/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/NetBSD-release-3-0/src/regress/lib/libc/
[DIR]  ftp://ftp.univ-savoie.fr/pub1/ftp.fr.debian.org/debian/pool/main/libc/
[DIR]  ftp://ftp.cosy.sbg.ac.at/debian/pool/main/libc/
[DIR]  ftp://ftp.sci.usq.edu.au/pub/debian/debian/pool/main/libc/
[DIR]  ftp://ftp.zcu.cz/pub/linux/debian/pool/main/libc/
[DIR]  ftp://ftp.cesnet.cz/.vol/releases.ubuntulinux.org/ubuntu/pool/universe/libc/
[DIR]  ftp://ftp.cesnet.cz/.vol/releases.ubuntulinux.org/ubuntu/pool/universe/libc/libc/