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How to disable promiscuous mode on nics?
Hello to the forum,
I just hit on a small problem on nics with the PROMISC flag set: I'm not able to delete the flag with ifconfig. In Linux and FreeBSD it is possible. (I don't think of bridge configurations here....) Some nics have the flag set: em1: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,S IMPLEX,MULTICAST> mtu 1500 ... and some not: bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ... The flag for bge0 changes whem I'm running tcpdump: bge0: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,S IMPLEX,MULTICAST> mtu 1500 ... and is cleared if I stop tcpdump. That ist not the same with em1 - the flag is "always-on". Any clues how to disable promiscuous mode in a running configuration? Regards Andre |
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