I was trying to set up tun networking for pearpc and CONFIG_IP_NF_MASQUERADE needs to be enabled in the kernel but it doesn't appear to be in gentoo-dev-sources. Apparently the 2.6.x kernel in Fedora Core 2 has it. All the other options needed were there: " For Linux 2.6.x: You must enable (as a module "M" or compiled-in "Y") the following features in your kernel: * "Device Drivers / Networking support / Universal TUN/TAP device driver support" (CONFIG_TUN) * "Device Drivers / Networking support / Networking Options / Network Packet Filtering (replaces ipchains) / IP: Netfilter Configuration / Connection tracking (required for masq/NAT)" (CONFIG_IP_NF_CONNTRACK) * "Device Drivers / Networking support / Networking Options / Network Packet Filtering (replaces ipchains) / IP: Netfilter Configuration / IP tables support (required for filtering/masq/NAT)" (CONFIG_IP_NF_IPTABLES) * "Device Drivers / Networking support / Networking Options / Network Packet Filtering (replaces ipchains) / IP: Netfilter Configuration / MASQUERADE target support" (CONFIG_IP_NF_MASQUERADE)" <--- Missing I tried to manually edit the .config file to add it in and it said: Aurora linux # make && make modules && make modules_install && make install CHK include/linux/version.h scripts/kconfig/conf -s arch/i386/Kconfig # # using defaults found in .config # .config:575: trying to assign nonexistent symbol IP_NF_MASQUERADE SPLIT include/linux/autoconf.h -> include/config/* Reproducible: Always Steps to Reproduce: 1.make menuconfig go to Device Drivers / Networking support / Networking Options / Network Packet Filtering (replaces ipchains) / IP: Netfilter Configuration / MASQUERADE target support 2. The option is missing 3.Manually adding CONFIG_IP_NF_MASQUERADE=y causes a nonexistent symbol Actual Results: .config:575: trying to assign nonexistent symbol IP_NF_MASQUERADE SPLIT include/linux/autoconf.h -> include/config/* Expected Results: IP_NF_MASQUERADE support Portage 2.0.50-r8 (default-x86-2004.0, gcc-3.4.0, glibc-2.3.3.20040420-r0, 2.6.7-gentoo-r7) ================================================================= System uname: 2.6.7-gentoo-r7 i686 Intel(R) Pentium(R) III Mobile CPU 1000MHz Gentoo Base System version 1.4.16 distcc 2.14 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.3 [enabled] Autoconf: sys-devel/autoconf-2.59-r3 Automake: sys-devel/automake-1.8.3 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-march=pentium3 -O2 -pipe -fomit-frame-pointer -mfpmath=387,sse -ffast-math -ftracer -fforce-addr" CHOST="i686-pc-linux-gnu" COMPILER="gcc3" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.1/share/config /usr/kde/3.2/share/config /usr/kde/3/share/config /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=pentium3 -O2 -pipe -fomit-frame-pointer -mfpmath=387,sse -ffast-math -ftracer -fforce-addr" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs ccache" GENTOO_MIRRORS="http://gentoo.chem.wisc.edu/gentoo http://mirror.tucdemonic.org/gentoo/ ftp://gentoo.noved.org/ ftp://gentoo.ccccom.com ftp://ftp.gtlib.cc.gatech.edu/pub/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage" USE="X aalib alsa apm arts avi berkdb cdr crypt cups dvd encode esd fbdev flac foomaticdb gdbm gif gnome gpm gtk gtk2 imlib java jit jpeg kde libg++ libwww mad mikmod mmx motif mpeg mysql ncurses nls nptl oggvorbis opengl oss pam pcmcia pdflib perl png python qt quicktime radeon readline samba scanner sdl slang spell sse ssl svga tcltk tcpd truetype video_cards_radeon x86 xml2 xmms xv zlib"
This config option is not in the kernel tree anymore. We (gentoo) didn't remove it. If you have a problem with the option being gone, please bring it up to the linux kernel networking developers.
