Tinc & moving VMs accross network

[Hendrik Visage]

On Mon, Dec 7, 2015 at 7:20 PM, Florent B <florent at coppint.com> wrote:
> Hi everyone,
>
> I already posted about this issue, but I can't find the old thread.
>
> I have a cluster of 5 nodes, running Proxmox 4, and Tinc as "virtual
> switch" for my nodes : on each node, a bridge "vmbr1" where Tinc is
> connected, provides me a secured network for my VMs (connected to that
> bridge).
>
> When I move (hot move) a VM from a host to another, I have to restart
> Tinc on node from where VM is coming to get access to that VM again.
>
> I don't know where could be the problem. With Proxmox 3, problem
> occurred sometimes, and now with Proxmox 4 it seems to be every time.
>
> Kernel is 4.2.3 (I don't know if it's related).
>
> Tinc 1.1 git up-to-date.
>
> Does someone have any hints about this "issue" ? I don't know if it's a
> Tinc problem, but the thing sure is that restarting Tinc solves it.
>
> I didn't touch any specific configuration on Tinc (Mode = switch).
>
> Thank you a lot if someone could help me debug this.

do check the hosts' bridge's mac forwarding tables with "brctl
showmacs vmbr1" as well
as the tinc's mac forwarding tables (don't ask me how) as that will be
the tables to investigate and "invalidate"
for the VM's MAC address you are moving.



>
> Florent
>
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