I have encountered this behaviour on the wily lts kernel in 14.04
(4.2.0-23-generic #28~14.04.1-Ubuntu)
However, i have manually added the route via ip route command, e.g.
# ip r a 192.168.100.1/32 dev br-ext
ip route show shows nothing, but ip route get displays the route.
# ip route show | grep 192.168.100.1
# ip route get 192.168.100.1
192.168.100.1 dev br-ext src 10.10.2.2
cache
The kernel seems to have this route, as it can be deleted
# ip r del 192.168.100.1/32 dev br-ext
And if trying to delete it again, I get an error message as expected.
# ip r del 192.168.100.1/32 dev br-ext
RTNETLINK answers: No such process
So I would retitle this bug as "routing table does not always show all
routes"
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1411350
Title:
routing table does not show dynamic routes
Status in linux package in Ubuntu:
Confirmed
Bug description:
Dynamic routes gotten from ICMP-redirect message are not shown in the
routing table.
Here is an example from my network:
My default router is 147.91.174.17 which had sent back ICMP-redirect packet
to change route to 147.91.174.5
$route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 147.91.174.17 0.0.0.0 UG 0 0 0 eth0
147.91.174.0 * 255.255.255.0 U 1 0 0 eth0
$netstat -rt
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
default 147.91.174.17 0.0.0.0 UG 0 0 0 eth0
147.91.174.0 * 255.255.255.0 U 0 0 0 eth0
$ ip route show
default via 147.91.174.17 dev eth0 proto static
147.91.174.0/24 dev eth0 proto kernel scope link src 147.91.174.16 metric
1
But packets to certain hosts are routed to a different router:
# ip route get 82.94.219.115
82.94.219.115 via 147.91.174.5 dev eth0 src 147.91.174.16
cache <redirected>
As you can see, route to 147.91.174.5 is not listed in the main
routing table.
Is this a bug or expected behaviour?
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-generic 3.13.0.43.50
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: zzarko 1969 F.... pulseaudio
/dev/snd/controlC0: zzarko 1969 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Jan 15 18:34:11 2015
HibernationDevice: RESUME=UUID=33a09d3d-d43f-4755-acee-21f923268c1b
InstallationDate: Installed on 2014-07-14 (185 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: Hewlett-Packard HP Compaq Elite 8300 CMT
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic
root=UUID=93f74578-9c5b-4ef0-a3e0-f29949715269 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-43-generic N/A
linux-backports-modules-3.13.0-43-generic N/A
linux-firmware 1.127.11
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/16/2013
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: K01 v02.90
dmi.board.asset.tag: CZC4231W0V
dmi.board.name: 3396
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: CZC4231W0V
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvrK01v02.90:bd07/16/2013:svnHewlett-Packard:pnHPCompaqElite8300CMT:pvr:rvnHewlett-Packard:rn3396:rvr:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: HP Compaq Elite 8300 CMT
dmi.sys.vendor: Hewlett-Packard
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1411350/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
