It is very like to http://bugs.gentoo.org/show_bug.cgi?id=71526 , however, now it is the 'account' module on the x86_64 and the kernel 2.6.15: $ uname -a Linux base 2.6.15-gentoo-r7 #1 Sat Apr 8 14:42:22 EEST 2006 x86_64 AMD Athlon(tm) 64 Processor 3200+ GNU/Linux $ emerge --search iptables ... * net-firewall/iptables Latest version available: 1.3.4 Latest version installed: 1.3.4 $ ls /lib64/iptables|grep account <Nothing not found> Unfortunately, I'm not so familiar with iptables to make them from original sources. It is also possible, that the account module is not supported now, but then the manual page is obsolete. $ emerge --info Portage 2.0.54 (default-linux/amd64/2006.0, gcc-3.4.5, glibc-2.3.5-r2, 2.6.15-gentoo-r7 x86_64) ================================================================= System uname: 2.6.15-gentoo-r7 x86_64 AMD Athlon(tm) 64 Processor 3200+ Gentoo Base System version 1.6.14 dev-lang/python: 2.4.2 sys-apps/sandbox: 1.2.12 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.16.1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=k8 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib64/mozilla/defaults/pref /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=k8 -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="ftp://ftp.gentoo.org.ua/ http://gentoo.linux.kiev.ua/" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org.ua/gentoo-portage" USE="amd64 X alsa apache2 audiofile avi berkdb bitmap-fonts bzip2 cdr cli crypt ctype cups curl dba dri dvd eds emboss encode esd exif expat fam fastbuild ffmpeg foomaticdb force-cgi-redirect fortran ftp gd gdbm gif glut gnome gpm gstreamer gtk gtk2 gtkhtml idn imagemagick imlib ipv6 isdnlog java jpeg junit lcms ldap libwww lua lzw lzw-tiff mad memlimit mhash mng motif mozilla mp3 mpeg mysql ncurses nls nptl nvidia ogg opengl pam pcre pdflib perl png posix pppd python quicktime readline ruby sdl session simplexml soap sockets spell spl ssl tcpd tiff tokenizer truetype truetype-fonts type1-fonts udev usb vorbis xine xml xml2 xmms xpm xsl xv xvid yaz zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY
the account module requires custom patched source