Twin directories of ftp.netfilter.org:

[DIR]  ftp://ftp.kulnet.kuleuven.ac.be/mirror/ftp.netfilter.org/
[DIR]  ftp://ftp.ps.pl/dsk1/ftp.netfilter.org/
[DIR]  ftp://ftp.linuxforum.hu/uhulinux/mirror/ftp:/ftp.iasi.roedu.net/mirrors/ftp.netfilter.org/
[DIR]  ftp://147.52.159.12/mirrors/ftp.netfilter.org/
[DIR]  ftp://62.112.194.64/mirror/ftp:/ftp.iasi.roedu.net/mirrors/ftp.netfilter.org/
[DIR]  ftp://195.228.155.101/mirror/ftp:/ftp.iasi.roedu.net/mirrors/ftp.netfilter.org/
[DIR]  ftp://ftp.ro.debian.org/pub/mirrors/ftp.netfilter.org/
[DIR]  ftp://ftp.ps.pl/dsk0/ftp.netfilter.org/
[DIR]  ftp://ftp.nrc.ca/pub/mirrors/by-site/ftp.netfilter.org/