Is this still a bug in Ubuntu 12.04?
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https://bugs.launchpad.net/bugs/442972
Title:
NetworkManager assigns default route to one of two interfaces despite
their both being defined in /e/n/i and managed=false
Status in “network-manager” package in Ubuntu:
New
Bug description:
Binary package hint: network-manager
This bug may be related to bug #435620 or bug #442957.
I have two wired network interfaces (one physical, one tagged (eth0.2) and
one untagged (eth0) vlan). Both are configured statically in
/etc/network/interfaces. My default gateway is on eth0.2:
auto lo eth0 eth0.2
iface lo inet loopback
iface eth0 inet static
address 172.19.0.33
netmask 255.255.255.0
iface eth0.2 inet static
address 145.x.x.x
netmask 255.255.255.248
gateway 145.x.x.y
Network manager is set not to touch this:
[main]
no-auto-default=00:15:17:xx:xx:xx
[ifupdown]
managed=false
This used to work fine with jaunty. After the upgrade to karmic NM started to
manage these interfaces. But worse, it adds a bogus default route for eth0:
145.x.x.z/29 dev eth0.2 proto kernel scope link src 145.x.x.x
172.19.0.0/24 dev eth0 proto kernel scope link src 172.19.0.33
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1000
default via 172.19.0.33 dev eth0 proto static # this is the local IP address
default via 145.x.x.y dev eth0.2 metric 100
According nm-applet, ifupdown (eth0) is enabled and ifupdown (eth0.2) is
disabled, even though both are up and working. This may be why it adds a
default route to eth0 in a desperate attempt to reach at least some hosts,
although a high metric would be nice in that case. Even if I add a default
route to eth0 with a higher metric, NM still overrides it with a new default
route with a zero metric. After start networking but before start
network-manager:
145.x.x.z/29 dev eth0.2 proto kernel scope link src 145.x.x.x
172.19.0.0/24 dev eth0 proto kernel scope link src 172.19.0.33
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1000
default via 145.x.x.y dev eth0.2 metric 100
default via 172.19.0.65 dev eth0 metric 200
After start network-manager:
145.x.x.z/29 dev eth0.2 proto kernel scope link src 145.x.x.x
172.19.0.0/24 dev eth0 proto kernel scope link src 172.19.0.33
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1000
default via 172.19.0.65 dev eth0 proto static
default via 145.x.x.y dev eth0.2 metric 100
default via 172.19.0.65 dev eth0 metric 200
The best solution in this case would probably for NM to start honoring
managed=false again, although it would be nice if it were somewhat
smarter about default routes and interfaces being up (if state=UP, the
media state is up and it's got an IP address, it's probably up).
ProblemType: Bug
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Mon Oct 5 11:35:25 2009
DistroRelease: Ubuntu 9.10
Gconf:
IpRoute:
145.99.245.96/29 dev eth0.2 proto kernel scope link src 145.99.245.98
172.19.0.0/24 dev eth0 proto kernel scope link src 172.19.0.33
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1000
default via 145.99.245.97 dev eth0.2 metric 100
Package: network-manager 0.8~a~git.20090923t064445.b20cef2-0ubuntu2
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/usr/bin/zsh
ProcVersionSignature: Ubuntu 2.6.31-11.38-generic
RfKill:
SourcePackage: network-manager
Uname: Linux 2.6.31-11-generic x86_64
WpaSupplicantLog:
XsessionErrors:
(gnome-settings-daemon:10063): GLib-CRITICAL **: g_propagate_error:
assertion `src != NULL' failed
(gnome-settings-daemon:10063): GLib-CRITICAL **: g_propagate_error:
assertion `src != NULL' failed
(polkit-gnome-authentication-agent-1:10105): GLib-CRITICAL **:
g_once_init_leave: assertion `initialization_value != 0' failed
(nautilus:10101): Eel-CRITICAL **: eel_preferences_get_boolean: assertion
`preferences_is_initialized ()' failed
(gnome-panel:10097): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to
allocate widget with width -6 and height 24
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