Got it ... it's dmesg | grep igb0
[2.5.0-DEVELOPMENT][admin@NollipfSense.nollipfsense.lan]/root: dmesg | grep igb0
igb0: <Intel(R) PRO/1000 PCI-Express Network Driver> mem 0xa1000000-0xa10fffff,0xa1104000-0xa1107fff at device 0.0 on pci7
igb0: Using 1024 TX descriptors and 1024 RX descriptors
igb0: Using 4 RX queues 4 TX queues
igb0: Using MSI-X interrupts with 5 vectors
igb0: Ethernet address: a0:36:9f:09:b0:3c
igb0: netmap queues/slots: TX 4/1024, RX 4/1024
igb0: link state changed to UP
igb0: promiscuous mode enabled
igb0: link state changed to DOWN
igb0: link state changed to UP
igb0: link state changed to DOWN
igb0: link state changed to UP
igb0: link state changed to DOWN
igb0: link state changed to UP
igb0: link state changed to DOWN
igb0: promiscuous mode disabled
igb0: link state changed to UP
igb0: <Intel(R) PRO/1000 PCI-Express Network Driver> mem 0xa1000000-0xa10fffff,0xa1104000-0xa1107fff at device 0.0 on pci7
igb0: Using 1024 TX descriptors and 1024 RX descriptors
igb0: Using 4 RX queues 4 TX queues
igb0: Using MSI-X interrupts with 5 vectors
igb0: Ethernet address: a0:36:9f:09:b0:3c
igb0: netmap queues/slots: TX 4/1024, RX 4/1024
igb0: link state changed to UP
igb0: promiscuous mode enabled
igb0: link state changed to DOWN
igb0: link state changed to UP
igb0: link state changed to DOWN
igb0: link state changed to UP
igb0: link state changed to DOWN
igb0: link state changed to UP
igb0: promiscuous mode disabled
igb0: promiscuous mode enabled
igb0: promiscuous mode disabled
igb0: link state changed to DOWN
igb0: link state changed to UP
igb0: <Intel(R) PRO/1000 PCI-Express Network Driver> mem 0xa1000000-0xa10fffff,0xa1104000-0xa1107fff at device 0.0 on pci7