Public bug reported:
My installation of Ubuntu Server 14.04 is bare metal (no
virtualisation). The hardware box contains 3 network interfaces, one
broadcom (not yet used) and two intel (actually one PCIe network card
with 2 ports, one is currently used).
The MAC address of the intel network card is not changed, it is the
"stock" MAC address. When installing Ubuntu, I choose the interface p1p2
from the Intel network card as default (and only) network interface.
This is the only port at the moment with an Ethernet cable.
Last Friday I got my Btrfs filesystem corrupted, I had to do a hard
reset. I thereafter upgraded to the latest kernel version (3.13.0-11,
but was 3.13.0-8 before the crash). I do not know if this is something
related but since then when rebooting I have no network. The reason
being that udev decides to rename eth1 (the 2nd port of the intel card)
to rename4 instead of p1p2. The problem is that my
/etc/network/interfaces as only p1p2 configured, no rename4, this means
that booting is slowed down because Ubuntu waits for p1p2 to "appear"
but it won't happen as udev decide on a different naming. And once
finally booted, ifconfig only reports the loopback interface, of course
rename4 is not configured. Now after a power cycle or simply a reboot,
sometimes udev switch back to the expected network naming so p1p2.
As a work around I had declared both p1p2 and rename4 in my interfaces
configuration file, using the same settings for both. I had to duplicate
the firewall rules so that they could be applied to either interfaces.
The problem is that it is slowing the boot process (it is waiting 60
seconds to try to configure all network interfaces) and obviously I am
ending up with either p1p2 or rename4 but not both, so each boot I have
to wait.
I discarded the work around and only have p1p2 configured now and I am
rebooting the machine when rename4 is "selected" by udev (rebooting
until I get p1p2).
Note: it is possible that the problem was present since the beginning,
but I almost did not reboot the system between the installation and the
kernel update last Friday, so I cannot tell for sure if this was not
existing already. Furthermore, I have tried also kernel 3.14-rc3 and I
also have the problem. Finally, /var/log/dpkg.log does not report any
udev update since initial installation.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: udev 204-5ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-11.31-generic 3.13.3
Uname: Linux 3.13.0-11-generic x86_64
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
Date: Mon Feb 24 09:58:57 2014
InstallationDate: Installed on 2014-02-09 (14 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Alpha amd64
(20140208)
MachineType: HP ProLiant MicroServer
ProcEnviron:
LANGUAGE=en_GB:en
TERM=screen
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-11-generic
root=UUID=d06b8dd1-fc10-45c9-a04b-3a303d8ccf58 ro rootflags=subvol=@ nomdmonddf
nomdmonisw
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/29/2011
dmi.bios.vendor: HP
dmi.bios.version: O41
dmi.chassis.type: 7
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrO41:bd07/29/2011:svnHP:pnProLiantMicroServer:pvr:cvnHP:ct7:cvr:
dmi.product.name: ProLiant MicroServer
dmi.sys.vendor: HP
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug network trusty udev
** Attachment added: "Extract from dmesg and syslog when udev rename p1p2 to
rename4"
https://bugs.launchpad.net/bugs/1284043/+attachment/3994085/+files/system-logs.tar.bz2
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https://bugs.launchpad.net/bugs/1284043
Title:
udev renaming the same hardware network i/f to different name, breaks
networking and firewall
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