netstat command returns nozero even if successively executing

Bug #1251563 reported by Vincent Hsu on 2013-11-15
This bug affects 2 people
Affects Status Importance Assigned to Milestone
net-tools (Debian)
Fix Released
net-tools (Ubuntu)

Bug Description

for example:
in Ubuntu
     $ netstat -s 1>/dev/null 2>&1 ; echo $?
in CentOS
     $ netstat -s 1>/dev/null 2>&1 ; echo $?

My test environment is Ubuntu 12.04.03. "-s" is a existing argument to netstat, so it should be executed successively and return zero.

Serge Hallyn (serge-hallyn) wrote :

This seems to be done intentionally by the patch


It explicitly changes exit(0) to exit(1) at the end of flag_sta handling. I have no idea why.

Changed in net-tools (Ubuntu):
status: New → Triaged
importance: Undecided → High
Serge Hallyn (serge-hallyn) wrote :

This bug also exists in the debian package, so it should be reported against debian.

Please let me know if you prefer that I open the debian bug, or if you'd like to do it yourself then link this bug to the debian one.

This is Debian Bug #541172 [1].

There's a patch available there at message #15 [2], but it didn't make into the package.
It fixes the problem.

Unfortunately it seems there's some issue contacting the package maintainers,
given that bug's age. I tried to help there.


Meanwhile, is it possible to carry that patch in the Ubuntu package?

This is the patch/debdiff for that, on top of the current source package in Trusty.

Meanwhile, is it possible to carry that patch in the Ubuntu package?

This is the patch/debdiff for that, on top of the current source package in Trusty.

This has been fixed on the Debian package net-tools version 1.60-26, May 12th 2014.

The attachment "net-tools_1.60-25ubuntu2.1.debdiff" seems to be a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. If the attachment isn't a patch, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.]

tags: added: patch
James Page (james-page) wrote :

net-tools needs to be merged into Utopic before we can proceed with any SRU activity.

Changed in net-tools (Debian):
status: Unknown → Fix Released
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package net-tools - 1.60-26ubuntu1

net-tools (1.60-26ubuntu1) utopic; urgency=low

  * Merge from Debian unstable (LP: #1251563). Remaining changes:
    - Ubuntu_unit_conversion.patch:
      + Ubuntu Policy: output using standard SI unit multiples:
        KB (10^3), MB (10^6), GB (10^9), TB (10^12) and PB (10^15).
        Includes manpage update to remove comment about IEC units.
    - Update Bug#254243-netstat.c-wide-opt.patch:
      + Increase size of remote and local address buffers 64->128.
    - Make the package Multi-Arch: foreign.
  * Dropped overlapping changes in Bug#254243-netstat.c-wide-opt.patch with:
    - Bug#508110-inet6.c-initialize_fields.patch
    - Bug#632660-netstat.c-long_udp6_addr.patch

net-tools (1.60-26) unstable; urgency=low

  * Fix wrong exit codes in netstat.c, closes: #541172.
  * Add patch to stop buffer overflows in route -6. Closes: #747006.
  * Add patch to fix wide display for long udp and raw addresses.
    Closes: #632660.
  * Add patch to fix mishandling of 64bit integers in netstat -s.
    Closes: #561161.
  * Add patch to fix printing of uninitialised ipv6 data in netstat.
    Closes: #508110.
  * debian/control: Add ${misc:Depends}, remove 'the' from description.
  * debian/rules: Add missing build-arch and build-indep targets.
 -- James Page <email address hidden> Mon, 30 Jun 2014 12:10:24 +0100

Changed in net-tools (Ubuntu):
status: Triaged → Fix Released
Chris J Arges (arges) wrote :

Here is an updated patch with some changes from the original. Sponsoring this.

Hello Vincent, or anyone else affected,

Accepted net-tools into trusty-proposed. The package will build now and be available at in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at . Thank you in advance!

Changed in net-tools (Ubuntu Trusty):
status: New → Fix Committed
tags: added: verification-needed

Hi Chris,

The package in -proposed fixed this bug.

Test-case from description. Details below.

 root@ubuntu:~# apt-cache madison net-tools
  net-tools | 1.60-25ubuntu2.1 | trusty-proposed/main ppc64el Packages

 root@ubuntu:~# apt-get install net-tools
 Get:1 trusty-proposed/main net-tools ppc64el 1.60-25ubuntu2.1 [172 kB]

 root@ubuntu:~# dpkg -s net-tools | grep ^Version:
 Version: 1.60-25ubuntu2.1

 root@ubuntu:~# netstat -s 1>/dev/null 2>&1 ; echo $?

tags: added: verification-done
removed: verification-needed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package net-tools - 1.60-25ubuntu2.1

net-tools (1.60-25ubuntu2.1) trusty; urgency=medium

  * Fix "netstat -s passes but returns 1". (LP: #1251563)
 -- Mauricio Faria de Oliveira <email address hidden> Thu, 03 Jul 2014 11:38:50 -0500

Changed in net-tools (Ubuntu Trusty):
status: Fix Committed → Fix Released

The verification of the Stable Release Update for net-tools has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

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