no network after image update

    Hello,


    after updating to Image B2019.3 the network doesn't work.


    The boot-message shows the error:

    Starting network: RTNETLINK answers: File exists

    FAIL


    a ping from/to the board fails.


    What can be the reason?


    Thanks

    Hi,


    if you login the rootfs and type in the command

    Code
    1. ifconfig -a


    Do you see a network device called eth?


    Your F&S Support Team

    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
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    yes, eth0 exists

    eth0 Link encap:Ethernet HWaddr 00:05:51:0D:59:22
    inet addr:10.0.0.63 Bcast:10.0.1.255 Mask:255.255.254.0
    inet6 addr: fe80::205:51ff:fe0d:5922/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:14777 errors:0 dropped:1663 overruns:0 frame:0
    TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:1000
    RX bytes:1956171 (1.8 MiB) TX bytes:168 (168.0 B)

    Hi,


    by default ethernet is disabled in linux. So first of all you have to enable ethernet, e.g.

    Code
    1. udhcpc -i eth0

    Then the network will be enabled and get dynamically an IP address. Does this work?


    Your F&S Support Team


    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
    Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.

    Hi,


    can you also test the network in UBoot. Does this work?


    Your F&S Support Team

    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
    Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.

    Hello,


    we will check. Can you tell me which HW revision of module and baseboard do you have?


    Your F&S Support Team

    F&S Elektronik Systeme GmbH
    As this is an international forum, please try to post in English.
    Da dies ein internationales Forum ist, bitten wir darum, Beiträge möglichst in Englisch zu verfassen.

    Hello,


    the board is connected to a ethernet-switch.

    The SOM is the PicoCoreMX6SX-V3-LIN with two ethernet ports.


    I don't know what the previos (delivery) Image-version was.I have done a reverse update to uImage-fsimx6sx-V2.0 found on the Fedora-VM.


    Now the ping is working in both directions again!


    boot-message:

    Starting network...

    RTNETLINK answers: File exists

    Starting telnetd: OK

    Hello,


    we tested the network on the PicoCoreMX6X with the B2019.03 Release and it worked.


    Did you update the Kernel-Image, the Rootfilesystem, the Devicetree, and the U-Boot?


    Did you make any changes to the network settings, for example in the file


    "/etc/network/interfaces" on you board,


    or did you add any packages to your Buildroot-Build?


    Your F&S Support Team