ethtool -d eth0
===============
RealTek RTL8411 registers:
--------------------------------------------------------
0x00: MAC Address                      80:fa:5b:08:d0:3d
0x08: Multicast Address Filter     0x00000000 0x00000080
0x10: Dump Tally Counter Command   0x0c2ec000 0x00000004
0x20: Tx Normal Priority Ring Addr 0x07a0a000 0x00000004
0x28: Tx High Priority Ring Addr   0x00000000 0x00000000
0x30: Flash memory read/write                 0x00000000
0x34: Early Rx Byte Count                              0
0x36: Early Rx Status                               0x00
0x37: Command                                       0x0c
      Rx on, Tx on
0x3C: Interrupt Mask                              0x803f
      SERR LinkChg RxNoBuf TxErr TxOK RxErr RxOK 
0x3E: Interrupt Status                            0x0000
      
0x40: Tx Configuration                        0x4b800f80
0x44: Rx Configuration                        0x0002870e
0x48: Timer count                             0x00000000
0x4C: Missed packet counter                     0x000000
0x50: EEPROM Command                                0x10
0x51: Config 0                                      0x00
0x52: Config 1                                      0xcf
0x53: Config 2                                      0x3c
0x54: Config 3                                      0x60
0x55: Config 4                                      0x10
0x56: Config 5                                      0x02
0x58: Timer interrupt                         0x00000000
0x5C: Multiple Interrupt Select                   0x0000
0x60: PHY access                              0x80040de1
0x64: TBI control and status                  0x27ffff01
0x68: TBI Autonegotiation advertisement (ANAR)    0xf70c
0x6A: TBI Link partner ability (LPAR)             0x0002
0x6C: PHY status                                    0xeb
0x84: PM wakeup frame 0            0x00000000 0x00000000
0x8C: PM wakeup frame 1            0x00000000 0x00000000
0x94: PM wakeup frame 2 (low)      0x00000000 0x00000000
0x9C: PM wakeup frame 2 (high)     0x00000000 0x00000000
0xA4: PM wakeup frame 3 (low)      0x00000000 0x00000000
0xAC: PM wakeup frame 3 (high)     0x00000000 0x00000000
0xB4: PM wakeup frame 4 (low)      0xffffffff 0xffffffff
0xBC: PM wakeup frame 4 (high)     0x00000000 0x00000000
0xC4: Wakeup frame 0 CRC                          0x0000
0xC6: Wakeup frame 1 CRC                          0x0000
0xC8: Wakeup frame 2 CRC                          0x0000
0xCA: Wakeup frame 3 CRC                          0x0000
0xCC: Wakeup frame 4 CRC                          0x0000
0xDA: RX packet maximum size                      0x4000
0xE0: C+ Command                                  0x20e1
      VLAN de-tagging
      RX checksumming
0xE2: Interrupt Mitigation                        0x5151
      TxTimer:       5
      TxPackets:     1
      RxTimer:       5
      RxPackets:     1
0xE4: Rx Ring Addr                 0x07935000 0x00000004
0xEC: Early Tx threshold                            0x27
0xF0: Func Event                              0x0040003f
0xF4: Func Event Mask                         0x00000000
0xF8: Func Preset State                       0x00031eff
0xFC: Func Force Event                        0x00000000

lspci -d :8168 -vv
==================
pcilib: sysfs_read_vpd: read failed: Input/output error
05:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0a)
	Subsystem: CLEVO/KAPOK Computer RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
	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-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 19
	Region 0: I/O ports at e000 [size=256]
	Region 2: Memory at f0004000 (64-bit, prefetchable) [size=4K]
	Region 4: Memory at f0000000 (64-bit, prefetchable) [size=16K]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
		Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
		Address: 0000000000000000  Data: 0000
	Capabilities: [70] Express (v2) Endpoint, MSI 01
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 10.000W
		DevCtl:	CorrErr- NonFatalErr- FatalErr- UnsupReq-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 4096 bytes
		DevSta:	CorrErr+ NonFatalErr- FatalErr- UnsupReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
			ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp-
		LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
			ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s (ok), Width x1 (ok)
			TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
		DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR-, OBFF Not Supported
			 AtomicOpsCap: 32bit- 64bit- 128bitCAS-
		DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
			 AtomicOpsCtl: ReqEn-
		LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
			 EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
	Capabilities: [b0] MSI-X: Enable+ Count=4 Masked-
		Vector table: BAR=4 offset=00000000
		PBA: BAR=4 offset=00000800
	Capabilities: [d0] Vital Product Data
		Not readable
	Kernel driver in use: r8169
	Kernel modules: r8169