On 07/08/2016 12:33 PM, Waschbüsch IT-Services GmbH wrote:
Am 07.07.2016 um 17:26 schrieb Andreas Steinel <[email protected]>:
Hi,
I currently only have one big 3.4 install (>150 VMs), on which I compared
the generated MACs and found out that they are completely random. Are there
plans or probably is there already an implementation to generate only from
a specific region? I did not found any changes in the roadmap.
In KVM/Qemu there is standard to use a prefix of 52:54:00, which was
present in Proxmox some years ago.
While we are at it: are generated MAC addresses ensured to be unique across a
cluster?
Not directly, although the chance of such a collisions is about:
0.000 000 000 000 355 271 % or 1 in 10 ^ 14.5
so if a problem arise I'd call it your lucky day, still you have a point.
It would not be that much of a problem to check it between the VMs/CTs,
I guess, but for other devices in the network... (prefix could help here)
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