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Forum Discussion
steveoelliott
Dec 24, 2015Luminary
device eth0 entered promiscuous mode
Hi all, I noticed something strange in my logs today, it never appears to have happened (certainly since March) before. Dec 17 09:15:57 despair kernel: device eth0 entered promiscuous mode ...
steveoelliott
Jan 07, 2016Luminary
No issues at all at the time or now... However, being in promiscuous mode elevates the CPU since the CPU processes EVERYTHING the NIC hears.
Also being an engineer, I never like something which I cannot explain or know the cause of. Otherwise things have a tendancy to rear their head later...
I'm sure others must have seen this but perhaps completely unaware.
I have just reloaded the secondary CHAOS and currently it is not running in promiscuous mode. So whilst the trigger occured at the same time, it seems it's no longer there. However, as you see on the 17th both devices entered and left this mode at the same time and went back to this mode on 22nd.
So strange....
steveoelliott
Jan 27, 2016Luminary
Hi all,
Whilst a reboot solved the issue, I then saw the following appear again:
Jan 20 17:36:35 chaos kernel: device eth0 entered promiscuous mode
Jan 20 17:36:39 chaos kernel: device eth0 left promiscuous mode
Jan 20 17:37:20 chaos kernel: device eth0 entered promiscuous mode
Jan 20 17:37:24 chaos kernel: device eth0 left promiscuous mode
This occured on both NAS's connected to the same network at the same time. Still no idea what may have caused this...
Thanks...
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