Hello Matthew, The MAC address is usually fixed and configured in the EEPROM. Can you dump the EEPROM and send it? Did you change/update the EEPROM?
-- Regards, Raanan -----Original Message----- From: Matthew Bekkema [mailto:mbekkem...@gmail.com] Sent: Wednesday, February 03, 2016 13:00 To: e1000-devel@lists.sourceforge.net Subject: [E1000-devel] How to reset MAC address? Hello everyone, A while ago I was getting "The NVM Checksum Is Not Valid" message and no ethernet access but I solved it following the instructions here: http://mynixworld.info/2012/12/05/e1000e-the-nvm-checksum-is-not-valid/ Today, my laptop booted with a new message: [ 3802.320950] pps_core: LinuxPPS API ver. 1 registered [ 3802.320957] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giome...@linux.it> [ 3802.321360] PTP clock support registered [ 3802.322813] e1000e: Intel(R) PRO/1000 Network Driver - 2.3.2-k [ 3802.322818] e1000e: Copyright(c) 1999 - 2014 Intel Corporation. [ 3802.323096] e1000e 0000:02:00.0: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode [ 3802.323143] e1000e 0000:02:00.0: irq 47 for MSI/MSI-X [ 3802.374615] e1000e 0000:02:00.0: Invalid MAC Address: 00:00:00:00:00:00 [ 3802.385246] e1000e: probe of 0000:02:00.0 failed with error -5 I took a look at /etc/udev/rules.d/70-persistent-net.rules and found: # PCI device 0x8086:0x109a (e1000e) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:08:00:00:00:00", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x8086:0x109a (e1000e) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:40:00:00:00:00", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" Which shows that my MAC address has somehow changed once before it got stuck on "00:00:00:00:00:00". Is there any way to reset my MAC address so I can use ethernet again? My laptop is a Lenovo Thinkpad T60. Below is the relevant output of lspci -vv: 02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller Subsystem: Intel Corporation Device 0000 Physical Slot: 2 Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 16 Region 0: Memory at ee000000 (32-bit, non-prefetchable) [size=128K] Region 2: I/O ports at 2000 [size=32] Capabilities: [c8] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME- Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+ Address: 00000000fee0300c Data: 4123 Capabilities: [e0] Express (v1) Endpoint, MSI 00 DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset- DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+ RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr+ TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <128ns, L1 <64us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Capabilities: [100 v1] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr- AERCap: First Error Pointer: 14, GenCap- CGenEn- ChkCap- ChkEn- Capabilities: [140 v1] Device Serial Number 00-00-00-ff-ff-00-00-00 ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. 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