Re: Docker/Libvirt networking issue / bug?

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maybe I'm come with not right answer ,
I think that depend by network configuration over internet and routing process
over applications. so will not be any conflict. I'm right?
> Both docker and libvirt use iptables to direct traffic in various ways.  They may well be in conflict


2016-10-06 22:18 GMT+03:00 Neil Horman <nhorman@xxxxxxxxxx>:
> On Thu, Oct 06, 2016 at 02:02:09PM -0500, Dan Williams wrote:
>> On Thu, 2016-10-06 at 12:39 -0600, Nathanael D. Noblet wrote:
>> > On Thu, 2016-10-06 at 14:28 -0400, Neil Horman wrote:
>> > >
>> > > I rarely mess with docker, but I expect that the docker0 bridge has
>> > > an ip
>> > > address on it which may conflict with the one on libvirt
>> > > bridge.  That is to
>> > > say, if they are on the same subnet, and the route for the docker0
>> > > bridge takes
>> > > precidence, you will loose dhcp.  Check the docker bridge ip and
>> > > remove it if
>> > > you see one, I expect that will restore your functionality
>> > >
>> >
>> > Unfortunately that isn't the issue as the docker bridge is 172... and
>> > bridge0 is 192.168... so they don't conflict. Also docker0 doesn't
>> > seem
>> > to have any devices (meaning it brctl show has no interfaces attached
>> > to it). Finally shutting down docker and removing docker0 doesn't
>> > restore connectivity, only a reboot does. Not even restarting NM
>> > fixes
>> > the issue.
>>
>> Try running 'iptables-save' before you start docker, and then running
>> 'iptables-save' after.  Diff the results.  Did docker remove anything?
>>
> +1, thats the next thing to look at.  Both docker and libvirt use iptables to
> direct traffic in various ways.  They may well be in conflict
> Neil
>
>> Dan
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