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ali3nx
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Joined: 21 Sep 2003
Posts: 732
Location: Winnipeg, Canada
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 Posted: Sat Sep 16, 2006 6:21 am Post subject: URGENT virtual interfaces not working [SOLVED] ALMOST!? |
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I've recently upgrade a few servers to 2006.1 and after rebooting we had an alarming suprise when we discovered that interfaces such as eth0:1 would not work. I've tested a few older kernels but still have the same results.
| Code: | magnificent ~ # ifconfig eth0:1 x.x.x.x netmask 255.255.255.0 broadcast x.x.x.x
SIOCSIFBRDADDR: Cannot assign requested address
SIOCSIFFLAGS: Cannot assign requested address |
does anyone possibly know what the cause of this could be? the servers all run hardened kernels and worked before the upgrade and frankly the kernel config could not be responsible as it's remained relatively similar since 2.6.11.
| Code: | magnificent ~ # emerge --info
Portage 2.1.1 (default-linux/amd64/2006.1/server, gcc-4.1.1, glibc-2.4-r3, 2.6.16-hardened x86_64)
=================================================================
System uname: 2.6.16-hardened x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 4400+
Gentoo Base System version 1.12.5
Last Sync: Fri, 15 Sep 2006 08:00:07 +0000
ccache version 2.3 [enabled]
app-admin/eselect-compiler: [Not Present]
dev-java/java-config: 1.2.11-r1
dev-lang/python: 2.4.3-r1
dev-python/pycrypto: 2.0.1-r5
dev-util/ccache: 2.3
dev-util/confcache: [Not Present]
sys-apps/sandbox: 1.2.17
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-r2
sys-devel/binutils: 2.16.1-r3
sys-devel/gcc-config: 1.3.13-r3
sys-devel/libtool: 1.5.22
virtual/os-headers: 2.6.16
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"
CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/revdep-rebuild /etc/terminfo"
CXXFLAGS="-march=k8 -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig candy ccache distlocks metadata-transfer sandbox sfperms strict"
GENTOO_MIRRORS="ftp://ftp.du.se/pub/os/gentoo ftp://ftp.linux.ee/pub/gentoo/distfiles/ ftp://trumpetti.atm.tut.fi/gentoo/ http://ftp.du.se/pub/os/gentoo"
LINGUAS=""
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude='/distfiles' --exclude='/local' --exclude='/packages'"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://83.168.212.11/gentoo-portage"
USE="amd64 acl acpi apache2 authdaemond bash-completion berkdb bitmap-fonts bzip2 ccache cgi chroot cjk cli cluster crypt ctype cups curl curlwrappers dba dio dlloader dri elibc_glibc erandom exif expat extensions fortran ftp gcc64 gdbm glibc-omitfp gmp gpm hardened icu idn imagemagick imap innodb input_devices_evdev input_devices_keyboard input_devices_mouse ipv6 isdnlog ithreads java javamail kernel_linux ldap libg++ logrotate logwatch maildir mailwrapper memlimit mmext mpi mysql mysqli nagios-dns nagios-ntp nagios-ping nagios-ssh ncurses neural nls nptl nptlonly objc odbc offensive pam pam_chroot pcntl pcre perl pg-hier pg-intdatetime pg-vacuumdelay php pic posix postgres ppds pppd procmail python readline reflection ruby sasl sendfile session sftplogging shaper shared sharedext sharedmem simplexml snmp sockets softquota spl sqlite ssl sysvipc szip tcl tcpd threads truetype truetype-fonts type1-fonts udev unicode urandom userland_GNU vda video_cards_apm video_cards_ark video_cards_ati video_cards_chips video_cards_cirrus video_cards_cyrix video_cards_dummy video_cards_fbdev video_cards_glint video_cards_i128 video_cards_i810 video_cards_mga video_cards_neomagic video_cards_nv video_cards_rendition video_cards_s3 video_cards_s3virge video_cards_savage video_cards_siliconmotion video_cards_sis video_cards_sisusb video_cards_tdfx video_cards_tga video_cards_trident video_cards_tseng video_cards_v4l video_cards_vesa video_cards_vga video_cards_via video_cards_vmware video_cards_voodoo virtual-users virus-scan wddx wmf xinetd xml xml2 xmlrpc xorg xsl zlib"
Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS |
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Compiling Gentoo since version 1.4
Thousands of Gentoo Installs Completed
Emerged on every continent but Antarctica
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Last edited by ali3nx on Sat Sep 16, 2006 5:55 pm; edited 1 time in total |
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ali3nx
l33t
Joined: 21 Sep 2003
Posts: 732
Location: Winnipeg, Canada
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| Posted: Sat Sep 16, 2006 6:41 am Post subject: |
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well just an update... I've recompiled a fresh "stable" gentoo-sources kernel without grsec and pax and oddly the same behavior has persisted...
| Code: | magnificent ~ # uname -a
Linux magnificent 2.6.17-gentoo-r8 #1 SMP Sat Sep 16 08:33:00 CEST 2006 x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 4400+ GNU/Linux
magnificent ~ # ifconfig eth0:1 up
SIOCSIFFLAGS: Cannot assign requested address |
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Janne Pikkarainen
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Joined: 29 Jul 2003
Posts: 1143
Location: Helsinki, Finland
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| Posted: Sat Sep 16, 2006 7:49 am Post subject: |
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I once saw an error similar to this and the solution was a bit unexpected: re-emerging net-tools (package containing ifconfig) made everything work again. So if kernel is not to blame, then this might be the reason for you, too.
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ali3nx
l33t
Joined: 21 Sep 2003
Posts: 732
Location: Winnipeg, Canada
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| Posted: Sat Sep 16, 2006 5:25 pm Post subject: |
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well i left this for the night and came back after letting a full world rebuild do it's magic. Someone on irc last night mentioned checking the kernel's routing table with iproute so I figured what could i possibly have to loose To my amazement all the ip addresses which do not show up in ifconfig are attached and pingable as listed by ip add. Even stranger yet is this is after a complete world rebuild which went flawlessly... If there's a bug in net-tools i'm unaware of that anyone knows of i'm certainly interested in it now.. One other interesting mention is I have this happening on multiple servers so it's not an isolated issue. 
| Code: | magnificent ~ # ip add
1: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:e0:81:5a:0c:01 brd ff:ff:ff:ff:ff:ff
inet 83.x.x.x/32 scope global eth0
inet 172.16.35.41/24 brd 172.16.35.255 scope global eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet 83.x.x.x/24 brd 83.x.x.x scope global secondary eth0
inet6 fe80::2e0:81ff:fe5a:c01/64 scope link
valid_lft forever preferred_lft forever
2: lo: <LOOPBACK,UP,10000> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
3: tunl0: <NOARP> mtu 1480 qdisc noop
link/ipip 0.0.0.0 brd 0.0.0.0
4: gre0: <NOARP> mtu 1476 qdisc noop
link/gre 0.0.0.0 brd 0.0.0.0
5: sit0: <NOARP> mtu 1480 qdisc noop
link/sit 0.0.0.0 brd 0.0.0.0
magnificent ~ # ifconfig
eth0 Link encap:Ethernet HWaddr 00:E0:81:5A:0C:01
inet addr:83.x.x.x Bcast:0.0.0.0 Mask:255.255.255.255
inet6 addr: fe80::2e0:81ff:fe5a:c01/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11476232 errors:0 dropped:0 overruns:0 frame:0
TX packets:12083461 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1049246589 (1000.6 Mb) TX bytes:1654760994 (1578.1 Mb)
Interrupt:217
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:967 errors:0 dropped:0 overruns:0 frame:0
TX packets:967 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:72980 (71.2 Kb) TX bytes:72980 (71.2 Kb) |
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Compiling Gentoo since version 1.4
Thousands of Gentoo Installs Completed
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ali3nx
l33t
Joined: 21 Sep 2003
Posts: 732
Location: Winnipeg, Canada
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| Posted: Sat Sep 16, 2006 5:37 pm Post subject: |
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Much thanks to agaffney for pointing out that the ifconfig method for virtual aliases is being depreciated or may be...
| Code: | <ali3nx> agaffney, are you possibly aware of any current bugs in net-tools?
<ali3nx> you might be interested in this one :)
<ali3nx> http://forums.gentoo.org/viewtopic-t-498774.html
<ali3nx> iproute2 will show virtual interfaces listed but ifconfig will not
<ali3nx> on amd64/2006,1
<agaffney> yep, I was bit by this the other day
<agaffney> jakub pointed the new way out to me
<ali3nx> had me in a panic last night
<ali3nx> :/
<ali3nx> new way?
<ali3nx> as in using iproute2?
<agaffney> yes
<ali3nx> ah
<agaffney> I was freaked out the other day because ifconfig didn't show any of my 15 ip aliases
<agaffney> for my T1-facing interface
<ali3nx> yessssss
<agaffney> but 'ip a s' showed them all
<agaffney> and they still worked
<ali3nx> we have a full public pair of /24's
<ali3nx> for game servers
<ali3nx> and non listed :)
<agaffney> I've got a /28
<ali3nx> certainly had me wiping my eyeballs |
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Compiling Gentoo since version 1.4
Thousands of Gentoo Installs Completed
Emerged on every continent but Antarctica
Compile long and Prosper! |
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Janne Pikkarainen
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Joined: 29 Jul 2003
Posts: 1143
Location: Helsinki, Finland
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| Posted: Sat Sep 16, 2006 6:08 pm Post subject: |
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Cool. Nice to know ifconfig is fading away.
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