promiscuous mode enabled

[vladone]

Hi!
I see this in dmesg.today:
rl0: promiscuous mode enabled
rl0: promiscuous mode disabled
rl0: promiscuous mode enabled
rl0: promiscuous mode disabled
rl0: promiscuous mode enabled
rl0: promiscuous mode disabled
I dont understand, way my network card enter and out from promiscuous
mode.

My card is:
rl0: <RealTek 8139 10/100BaseTX> port 0xec00-0xecff mem 0xeb203000-0xeb2030ff irq 18 at device 19.0 on pci0
miibus2: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus2
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto