Due to bug 417529 I upgraded from networkmanager-0.8.4.0-r2 (amd64) to net-misc/networkmanager-0.9.4.0-r5 (~amd64). Now I have a new problem that I already posted in the forum (http://forums.gentoo.org/viewtopic-p-7097680.html#7097680). Everytime an IPv6 host is connected an additional route for this specific host is added to the kernel routing table. These routes are unnecessary, because they use the same gateway as the default route. (Otherwise my host had not been able to connect to the remote host in the very first place.) At the end of the day my kernel has thousands of routes. After booting my IPv6 config looks like that: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000 inet6 2001:7c0:409:274:213:77ff:febe:8a56/64 scope global dynamic valid_lft 1764sec preferred_lft 564sec inet6 fe80::213:77ff:febe:8a56/64 scope link valid_lft forever preferred_lft forever My routes are: fe80::/64 dev eth0 proto kernel metric 256 ff00::/8 dev eth0 metric 256 default via fe80::ae16:2dff:fef4:2c00 dev eth0 proto static metric 1 And /etc/resolv.conf equals # Generated by resolvconf search hek.uni-karlsruhe.de neu.hek.uni-karlsruhe.de neu.hek.uni-karlsruhe.de. nameserver 172.20.223.177 nameserver 2001:7c0:409:2fe::2 For example, if I open www.google.de in Firefox, Firefox connects to 2a00:1450:4016:800::101f, and I get a new route 2a00:1450:4016:800::101f via fe80::ae16:2dff:fef4:2c00 dev eth0 proto static metric 1024 rtt 13ms rttvar 13ms cwnd 10 in my routing table. Emerge info: Portage 2.1.10.65 (default/linux/amd64/10.0/no-multilib, gcc-4.5.3, glibc-2.14.1-r3, 3.3.8-gentoo x86_64) ================================================================= System uname: Linux-3.3.8-gentoo-x86_64-Intel-R-_Core-TM-2_Duo_CPU_P8700_@_2.53GHz-with-gentoo-2.1 Timestamp of tree: Mon, 23 Jul 2012 21:45:01 +0000 app-shells/bash: 4.2_p20 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.3-r2, 3.2.3 dev-util/cmake: 2.8.7-r5 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.1-r1 sys-apps/openrc: 0.9.8.4 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.11.1 sys-devel/binutils: 2.21.1-r1 sys-devel/gcc: 4.5.3-r2 sys-devel/gcc-config: 1.6 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r1 sys-kernel/linux-headers: 3.4-r2 (virtual/os-headers) sys-libs/glibc: 2.14.1-r3 Repositories: gentoo x-portage ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA dlj-1.1 AdobeFlash-10.3 Oracle-BCLA-JavaSE" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=core2 -msse4.1 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa /usr/share/themes/oxygen-gtk/gtk-2.0" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O2 -march=core2 -msse4.1 -pipe" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles news parallel-fetch parse-eapi-ebuild-head protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ http://ftp.uni-erlangen.de/pub/mirrors/gentoo http://mirrors.sec.informatik.tu-darmstadt.de/gentoo/ http://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ http://ftp.rz.tu-bs.de/pub/mirror/ftp.gentoo.org/gentoo/ http://gd.tuwien.ac.at/opsys/linux/gentoo/" LANG="de_DE.utf8" LC_ALL="de_DE.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="de en en_GB fr" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi addressbook alsa amd64 apng bash-completion berkdb bluetooth bzip2 cairo calendar cddb cdr cjk cleartype cli clucene consolekit cracklib crypt cups cxx dbus device-mapper dhclient dri dts dvd dvdr encode exif fam ffmpeg firefox flac fontconfig foomaticdb fortran g3dvl gdbm geolocation gif gimp git gnutls gphoto2 gpm graphviz gstreamer gudev handbook hwdb iconv icu imagemagick inotify iproute2 ipv6 java java6 jpeg jpeg2k kde kpathsea lcdfilter lcms ldap lensfun libnotify lm_sensors mad mikmod minizip mmap mmx mmxext mng modules mp3 mp4 mpeg mudflap ncurses networkmanager nls nptl nsplugin ogg opengl openmp openvg osmesa pam pcre pdf phonon plasma pm-utils png policykit ppds python qt3support qt4 quicktime raptor readline resolvconf samba scanner sdl semantic-desktop session smp spell sse sse2 sse3 ssl ssse3 startup-notification subversion svg syslog tcpd theora threads tiff truetype udev unicode usb v4l v4l2 vcd vdpau vorbis wifi wmf x264 xattr xcomposite xetex xinerama xml xorg xpm xscreensaver xulrunner xv xvid xvmc zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump" CAMERAS="adc65 agfa_cl20 aox barbie canon casio_qv clicksmart310 digigr8 digita dimagev dimera3500 directory enigma13 fuji gsmart300 hp215 iclick jamcam jd11 kodak_dc120 kodak_dc210 kodak_dc240 kodak_dc3200 kodak_ez200 konica konica_qm150 largan lg_gsm mars mustek panasonic_coolshot panasonic_dc1000 panasonic_dc1580 panasonic_l859 pccam300 pccam600 polaroid_pdc320 polaroid_pdc640 polaroid_pdc700 ptp2 ricoh ricoh_g3 samsung sierra sipix_blink sipix_blink2 sipix_web2 smal sonix sony_dscf1 sony_dscf55 soundvision spca50x sq905 stv0674 stv0680 sx330z template toshiba_pdrm11" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev keyboard mouse synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de en en_GB fr" PHP_TARGETS="php5-3" PYTHON_TARGETS="python3_2 python2_7" RUBY_TARGETS="ruby19" USERLAND="GNU" VIDEO_CARDS="nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Apparently this is a known problem with networkmanager-0.9's ipv6 support, see https://bugzilla.gnome.org/show_bug.cgi?id=671767 Basically: * the kernel's ipv6 stack adds new ipv6 routes for each connected host. * those automatically added routes should have a cache tag, so that they get cleaned up when no longer needed. * under some circumstances networkmanager does something to the ipv6 routes that removes the cache tag, so the automatically added ipv6 routes never get cleaned up by the kernel.
I've applied patches that fix this bug in the new 0.9.6.0 ebuild. >*networkmanager-0.9.6.0 (13 Sep 2012) > > 13 Sep 2012; Alexandre Rostovtsev <tetromino@gentoo.org> > -files/10-openrc-status-r1, -networkmanager-0.8-r1.ebuild, > -files/networkmanager-0.8-confchanges.patch, > -files/networkmanager-0.8-nscd-clear-cache.patch, > -files/networkmanager-0.8-read-hostname.patch, -networkmanager-0.9.0.ebuild, > -files/networkmanager-0.9.1.95-force-libnl1.1.patch, > -networkmanager-0.9.2.0-r5.ebuild, > -files/networkmanager-0.9.2.0-ifnet-ignore-user-connections.patch, > -files/networkmanager-0.9.2.0-ifnet-openrc-style.patch, > -files/networkmanager-0.9.2.0-ifnet-password-truncated.patch, > -files/networkmanager-0.9.2.0-ifnet-remove-system-prefix.patch, > -files/networkmanager-0.9.2.0-ifnet-unquote-hostname.patch, > -files/networkmanager-0.9.2.0-init-provide-net.patch, > +networkmanager-0.9.6.0.ebuild, > +files/networkmanager-0.9.6.0-cached-ipv6-routes-1.patch, > +files/networkmanager-0.9.6.0-cached-ipv6-routes-2.patch, > +files/networkmanager-0.9.6.0-daemon-signals.patch, > -files/NetworkManagerDispatcher, -files/nm-system-settings.conf, > metadata.xml: > Version bump with various fixes. No longer saves thousands of temporary ipv6 > routes (bug #428274, thanks to Matthias Nagel). No longer installs dispatcher > and init scripts when USE=systemd to avoid annoying systemd users (bug > #434692, thanks to Arne Stäcker). Drop old.
