• [6.9.1] After upgrading from 6.8.3 docker doesn't show 'br0' in network types.


    jairbj
    • Solved Urgent

    After upgrading from 6.8.3 to 6.9.1 (this morning) docker in GUI doesn't show 'br0' in network types.

     

    As a result I can't set an specific IP for a docker container and also can't use them.

     

    image.png.853ee7fa4a5b0459e36844286ab03d08.png

     

    servidor-diagnostics-20210311-1010.zip




    User Feedback

    Recommended Comments

    2 minutes ago, trurl said:

    There was never a 6.8.4 release. What version did you actually upgrade from? 

    Sorry, it was 6.8.3. My mistake.

    Link to comment
    1 minute ago, Squid said:

    Make sure this is checked off in Settings - Docker (advanced view) with the service stopped

     

    image.thumb.png.2ec38a7c37c74ffc2261c95d52ff8f8b.png

    Hi Squid, yes it is.

    image.thumb.png.55033bb206747b962d71f18bd0556c69.png

    Link to comment
    2 minutes ago, Squid said:

    Deselect all of them, then recheck them and apply.

    Deselected, applied, selected, applied.

     

    Also tried putting an fixed ip in my network settings.

     

    Same problem.

     

    image.png.cda33ae8691f384e736b16b5d3fb31f7.png

    Link to comment

    If I manually run this command, it works.

    docker network create -d macvlan --subnet=192.168.1.0/24 --gateway=192.168.1.1 -o parent=br0 br0 it works

     

    image.thumb.png.188b9eff28c4ab895ac7383e38084f39.png

    Link to comment

    After testing here, I think I found the problem but I don't know how to solve.

     

    I believe that the problem is with IPv6 gateway.

     

    image.thumb.png.505ae755b75dff0afc405c1099c79244.png

     

    If i try to reproduce this config by command I get:

    image.thumb.png.40f1c27d3fb42aaa6dfce45194ef2a21.png

     

    Look that the gateway is in a different subnet.

     

    However my network settings are correct:

    image.png.3b78b994f6e64c418c31037d8058668a.png

     

    Unraid should be get confused with the other gateway that is added automatically by ipv6 autoconfig.

     

    image.thumb.png.244694664ac670e3f2c8ad0d245ec879.png

     

    If I manually add the network with correct gateway it works:

    image.thumb.png.b0801ba11c491f8bb64758025b476925.png

     

     

     

    Link to comment

    After checking my network here, I think I found the problem. My router wasn't answering as the IP fd00::1.

     

    After fixing it, now the routing table is a little different in unraid:

    image.thumb.png.d2d755c94cc1cf97fb13cdd5e6f6af13.png

     

    But settings in docker config are the same:
    image.thumb.png.b3b4051aa3aa0e513af8c4427a3c3a68.png

     

    The question now is: why it stopped working only after the upgrade?

     

     

    Link to comment

    I am having the same issue.  br0 just disappeared into thin air after upgrading from 6.8.3 to 9.1 and I cant seem to get it back either.

    Link to comment
    13 hours ago, danktankk said:

    I am having the same issue.  br0 just disappeared into thin air after upgrading from 6.8.3 to 9.1 and I cant seem to get it back either.

     

    Hi friend, as a temporary solution (before fixing my router's IP) I set docker configs to "Preserve user defined networks" to yes and created a macvlan network with the name "mybr0" so, I set my docker's containers to use this network. Don't manually create a network named "br0" as it is removed on restart.

    Link to comment
    2 hours ago, jairbj said:

     

    Hi friend, as a temporary solution (before fixing my router's IP) I set docker configs to "Preserve user defined networks" to yes and created a macvlan network with the name "mybr0" so, I set my docker's containers to use this network. Don't manually create a network named "br0" as it is removed on restart.

    Thank you but I use br0 for VMs and need it to work as it did before.  Im sure it will be sorted soon enough unless its user error in which case I am going to make a post about it and send my diagnostics.

    Link to comment
    4 hours ago, danktankk said:

    Thank you but I use br0 for VMs and need it to work as it did before.  Im sure it will be sorted soon enough unless its user error in which case I am going to make a post about it and send my diagnostics.

     

    Is it not working even for vms?

    Link to comment
    2 hours ago, jairbj said:

     

    Is it not working even for vms?

    Well...  uhm no.  If it isnt there for a docker container - how could it be there for a VM?

    Link to comment
    Just now, danktankk said:

    Well...  uhm no.  If it isnt there for a docker container - how could it be there for a VM?

     

    Docker "br0" is just a "config" named br0 attached to the real br0. Even if you create a "mybr0" in docker, you can attach it to the real br0.

     

    You can create like this:
     

    docker network create -d macvlan --subnet=192.168.X.X/24 --gateway=192.168.X.X -o parent=br0 mybr0

     

    Change the IPs for matching your configs.

     

    The last parameter is the name of your docker network, and the previous one is the network it should be attached.

     

    Link to comment

    Thank you for your reply, Ive been busy not getting any help at all in a thread I posted for this very thing.  LOL its almost expected any more.

     

    so if I dont have br0 at all, how would me calling on parent=br0 solve anything?

    Edited by danktankk
    Link to comment
    19 hours ago, danktankk said:

    Thank you for your reply, Ive been busy not getting any help at all in a thread I posted for this very thing.  LOL its almost expected any more.

     

    so if I dont have br0 at all, how would me calling on parent=br0 solve anything?

     

    There are two br0.

     

    1 - System network br0, which is a bridge for your network connections. Up to a certain point we can call it the "physical network br0".

    2 - Docked network named br0 that can contains any configuration linked (parent) to any network.

     

    The docker configuration br0 that we used to have is just a configuration linked (parent) to the System network br0.

     

    You can create a docker network named anything you want linked to the "physical" br0 (parent=br0).

     

    Link to comment

    Thanks for the information.  Very much appreciated!  I will give that a shot if I dont hear anything else from my thread.

    Link to comment


    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.
    Note: Your post will require moderator approval before it will be visible.

    Guest
    Add a comment...

    ×   Pasted as rich text.   Restore formatting

      Only 75 emoji are allowed.

    ×   Your link has been automatically embedded.   Display as a link instead

    ×   Your previous content has been restored.   Clear editor

    ×   You cannot paste images directly. Upload or insert images from URL.


  • Status Definitions

     

    Open = Under consideration.

     

    Solved = The issue has been resolved.

     

    Solved version = The issue has been resolved in the indicated release version.

     

    Closed = Feedback or opinion better posted on our forum for discussion. Also for reports we cannot reproduce or need more information. In this case just add a comment and we will review it again.

     

    Retest = Please retest in latest release.


    Priority Definitions

     

    Minor = Something not working correctly.

     

    Urgent = Server crash, data loss, or other showstopper.

     

    Annoyance = Doesn't affect functionality but should be fixed.

     

    Other = Announcement or other non-issue.