Hello,

You can get a list of pinned packages (packages sticked to a particular version) with the following command:

    apt-mark showhold

Please post the output of the command above and also the output of:

    apt-cache policy ntopng
    apt-cache policy pfring

Emanuele


On 05/16/2018 02:02 AM, It Manager wrote:
Hi Emanuele,

thanks for the response.  Unfortunately, I don't know what "pinned" means with those packages, and I gather I've already gone past the required package.  I have only ever updated via apt update && apt upgrade, which always worked up until recently.

Given I already have -1888, how would you recommend I proceed from here?

Cheers,
Chris.

On 15 May 2018 at 19:08, Emanuele Faranda <fara...@ntop.org <mailto:fara...@ntop.org>> wrote:

    Hello,

    On ubuntu 16 I can successfully install ntopng:

    apt-cache policy ntopng
    ntopng:
      Installed: 3.4.180511-4407
      Candidate: 3.4.180511-4407
      Version table:
     *** 3.4.180511-4407 500
            500 http://packages.ntop.org/apt-stable/16.04
    <http://packages.ntop.org/apt-stable/16.04> x64/ Packages
            100 /var/lib/dpkg/status
         2.2+dfsg1-1build1 500
            500 http://it.archive.ubuntu.com/ubuntu
    <http://it.archive.ubuntu.com/ubuntu> xenial/universe amd64 Packages

    apt-cache policy pfring

    pfring:
      Installed: 7.0.0-1927
      Candidate: 7.0.0-1927
      Version table:
     *** 7.0.0-1927 500
            500 http://packages.ntop.org/apt-stable/16.04
    <http://packages.ntop.org/apt-stable/16.04> x64/ Packages
            100 /var/lib/dpkg/status


    ntopng depends on pfring 7.0.0-1927, not on 7.0.0-1887 . Please
    check if you have pinned the ntopng/pf_ring packages.

    Emanuele


    On 05/15/2018 10:40 AM, It Manager wrote:
    Hi Simone,

    thanks for the reply.  Unfortunately, I always use apt update &&
    apt upgrade and that is where I get the error.

    I only tried the single update as a last resort.

    When I run apt update & apt upgrade I get the original error
    message listed in my first email...

    > The following packages have unmet dependencies:

    > ntopng : Depends: pfring (= 7.0.0-1887) but 7.0.0-1888 is installed


    Cheers,
    Chris.

    On 15 May 2018 at 18:13, Simone Mainardi <maina...@ntop.org
    <mailto:maina...@ntop.org>> wrote:

        Hi,

        On 14 May 2018, at 23:47, It Manager
        <itmana...@lilydalehs.vic.edu.au
        <mailto:itmana...@lilydalehs.vic.edu.au>> wrote:

        Hi Simone,

        I'm not sure about Centos, but I am on Ubuntu 16.04.4 LTS. I
        have always updated with
        sudo apt update && sudo apt upgrade

        The error I get is

        The following packages have unmet dependencies:
          ntopng: Depends:  pfring (=7.0.0-1887) but 7.0.0-1888 is
        installed


        Just for fun, i thought I'd try to update just pfring so ran
        sudo apt install --only-upgrade pfring

        This is what I got.

        Reading package lists... Done
        Building dependency tree
        Reading state information... Done
        You might want to run 'apt-get -f install' to correct these:
        The following packages have unmet dependencies:
         cento : Depends: pfring (= 7.0.0-1888) but 7.0.0-1927 is to
        be installed
         n2disk : Depends: pfring (= 7.0.0-1888) but 7.0.0-1927 is
        to be installed
                  Recommends: pfring-dkms (= 7.0.0-1888) but 7.0.0
        is to be installed
         nprobe : Depends: pfring (= 7.0.0-1888) but 7.0.0-1927 is
        to be installed
         ntopng : Depends: pfring (= 7.0.0-1887) but 7.0.0-1927 is
        to be installed
        E: Unmet dependencies. Try 'apt-get -f install' with no
        packages (or specify a solution).

        This makes sense to me. You are trying to upgrade only pfring
        and the package manager complains because this will break
        dependencies of other installed packages. Indeed, installed
        packages depend on an older pfring version but they are not
        going to be updated. The following should work:

        apt-get update && apt-get upgrade


        Simone



        Cheers,
        Chris.

        On 12 May 2018 at 02:06, Simone Mainardi <maina...@ntop.org
        <mailto:maina...@ntop.org>> wrote:



            On 10 May 2018, at 00:19, David Hansen
            <dhan...@spectralnetworks.net
            <mailto:dhan...@spectralnetworks.net>> wrote:

            I have the same problem on centos, can’t seem to get
            around it.

            what is the centos version you are using? are you using
            the stable rpms? can you please post the full command
            and output you are getting?

            *From:*ntop-boun...@listgateway.unipi.it
            <mailto:ntop-boun...@listgateway.unipi.it>
            [mailto:ntop-boun...@listgateway.unipi.it
            <mailto:ntop-boun...@listgateway.unipi.it>]*On Behalf
            Of*It Manager
            *Sent:*Wednesday, May 9, 2018 5:02 PM
            *To:*n...@unipi.it <mailto:n...@unipi.it>
            *Subject:*Re: [Ntop] cannot update ntopng due to
            incorrect version of pfring
            Hello Support,
            I'm wondering if there's any update to this issue?  I'm
            still unable to update my installation.
            Cheers,
            Chris.
            On 5 May 2018 at 19:59, It Manager
            <itmana...@lilydalehs.vic.edu.au
            <mailto:itmana...@lilydalehs.vic.edu.au>> wrote:

                Hi Luca,
                thanks for the response.  I am getting the same error.
                You might want to run 'apt-get -f install' to
                correct these.
                The following packages have unmet dependencies:
                 ntopng : Depends: pfring (= 7.0.0-1887) but
                7.0.0-1888 is installed
                E: Unmet dependencies. Try using -f.
                Should I try the apt-get -f install ?
                Cheers,
                Chris.
                On 5 May 2018 at 18:13, Luca Deri <d...@ntop.org
                <mailto:d...@ntop.org>> wrote:

                    Chris,
                    please do apt-get update and try again
                    Luca


                        On 4 May 2018, at 22:38, It Manager
                        <itmana...@lilydalehs.vic.edu.au
                        <mailto:itmana...@lilydalehs.vic.edu.au>>
                        wrote:
                        Hi All,
                        I am running ntopng on a ubuntu server. 
                        I’m trying to update via apt update /
                        upgrade, and am getting the message
                        The following packages have unmet dependencies:
                        ntopng : Depends: pfring (= 7.0.0-1887) but
                        7.0.0-1888 is installed
                        This seems strange as I always update this
                        machine via apt update / upgrade.  How
                        should I resolve this problem?
                        Cheers,
                        Chris.
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