Comment 0 for bug 1296887

This regression was introduced several (2-3) day ago.

My /etc/network/interfaces
$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual

auto eth0.10
        iface eth0.10 inet dhcp

auto eth0.20
        iface eth0.20 inet manual

auto dsl-provider
iface dsl-provider inet ppp
pre-up /sbin/ifconfig eth0.20 up # line maintained by pppoeconf
provider dsl-provider

During boot I see "Waiting for network configuration...", after boot in ifconfig -a output I does NOT see eht0.10 and eth0.20 interfaces.

But, if I run manually these commands AFTER boot
ip link add link eth0 name eth0.10 type vlan id 10
ip link add link eth0 name eth0.20 type vlan id 20
pon dsl-provider

all works perfectly.

Also I tried to add "8021q" in /etc/modules but it did not help.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-19-generic 3.13.0-19.39
ProcVersionSignature: Ubuntu 3.13.0-19.39-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: dimanne 2784 F.... pulseaudio
 /dev/snd/controlC0: dimanne 2784 F.... pulseaudio
CurrentDesktop: KDE
Date: Mon Mar 24 22:29:13 2014
HibernationDevice: RESUME=UUID=e70873bf-d62f-4b4c-9f3c-823f35acb596
InstallationDate: Installed on 2013-11-11 (133 days ago)
InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: System manufacturer System Product Name
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-19-generic root=UUID=b5fff7d9-81c4-43c5-94b6-902286582c80 ro quiet splash
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-19-generic N/A
 linux-backports-modules-3.13.0-19-generic N/A
 linux-firmware 1.126
RfKill:

SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-02-21 (31 days ago)
dmi.bios.date: 12/04/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0202
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6T
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0202:bd12/04/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6T:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer