Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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Actually, you're right. Messages is probably a better word than errors.
So these aren't bootup messages, but messages that just appear periodically on the console?
I don't have any direct experience with this, but I'll put a couple of ideas out here anyway:
How often does this happen? Does it seem random? When did it start happening?
Are you running any processes that might be doing this? Check your running processes by doing "ps -aux|more" and look for a likely suspect.
Are you running a packet sniffer on your network? That would toggle a NIC into promiscuous mode. For that matter, if your network been compromised, someone else may be running a packet sniffer on your machine.
Try a Google search using the console messages, or parts of them, as your search criteria.
The promiscuous mode is a mode set for your nic card. On normal mode, the cards interprets packets only when is own MAC adress is solicitate, all other paquets on the network are discard. The promiscuous mode is used by protocol analyser, the card pass every packet on the net the third layer and so on to the application layer for software application.
In my believe, you must have installed a packet sniffer on your machine...
I think that you can turn it off, with modprobe, do man modprode and you can find the switch to turn off promiscuous mode.
After a little more research, I've found the following:
A review of /var/log/messages on my machine showed that a script (/usr/share/msec/promisc_check.sh) was being fired off as a cron job. Although it never printed messages to my screen, you might want to check it out.
BTW- I'm using Mandrake 8; the location of this script may be different in your distro.