015461: Sep 28 07:20:23.016: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 3 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015462: Sep 30 08:31:57.536: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 46 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015463: Oct  1 06:06:34.023: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 2 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015464: Oct  1 13:44:34.481: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 1 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015465: Oct  5 05:59:00.140: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 7 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015466: Oct  8 16:04:17.460: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015467: Oct  9 09:08:05.407: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015468: Oct 10 12:18:21.720: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015469: Oct 12 20:06:42.365: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1
015470: Oct 14 08:24:29.046: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 1 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po1 in vlan 1

это железка cisco 4506-e

помогите, как вычислить от куда лезет этот мак

я прошерстил логи на всех железках в сети, ничего