"ifconfig -a" does not show all the inet4 interfaces

Bug #693230 reported by nutznboltz on 2010-12-22
This bug affects 2 people
Affects Status Importance Assigned to Milestone
net-tools (Ubuntu)

Bug Description

Binary package hint: net-tools

$ ifconfig -a | fgrep .27

No output.

$ ip addr ls | fgrep .27
    inet brd scope global secondary eth0:FWB5

Magic "secret" interface is revealed.

Note: first eth0:FWB5 interface conceals the second one

$ ip addr ls | grep FWB5$
    inet brd scope global secondary eth0:FWB5
    inet brd scope global secondary eth0:FWB5


$ ifconfig -a | grep 'FWB5 '
eth0:FWB5 Link encap:Ethernet HWaddr 18:a9:05:5e:a0:88

(only one line of ifconfig -a output when two interfaces exist)

Note: addresses came into existence like

ip -4 addr add dev eth0 brd + scope global label eth0:FWB5
ip -4 addr add dev eth0 brd + scope global label eth0:FWB5

So now you have the ability to test this bug on your own; just run those two commands and try to see both addresses using "ifconfig -a" just like the ifconfig(8) man page says: "if a single -a argument is given, it displays the status of all interfaces" (which is an untruth as this example demonstrates.)

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: net-tools 1.60-23ubuntu2
ProcVersionSignature: Ubuntu 2.6.32-27.49-generic
Uname: Linux 2.6.32-27-generic i686
NonfreeKernelModules: vmblock vsock vmci vmxnet vmmemctl vmhgfs
Architecture: i386
Date: Tue Dec 21 19:10:45 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427.1)
SourcePackage: net-tools

description: updated
description: updated
description: updated
description: updated

"Please keep in mind that most net-tools programs are obsolete now: "

"Please keep in mind that we must continue to distribute buggy software since our replacement is incomplete." - implicit

Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in net-tools (Ubuntu):
status: New → Confirmed
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