[SOLVED] Second network card stopped working

vipTelnet

New Member
Mar 20, 2021
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After updating to 6.4, the 2nd network card stopped working, it worked earlier.
I have 2 network cards in my system, each of them hosts virtual machines from its own subnet
1. Network card for subnet 192.168.0. * it is built into the motherboard and it works

06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. Device 8125 (rev 04)
Subsystem: ASUSTeK Computer Inc. Device 87d7
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 37
Region 0: I/O ports at d000
Region 2: Memory at fc500000 (64-bit, non-prefetchable) [size=64K]
Region 4: Memory at fc510000 (64-bit, non-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
Masking: 00000000 Pending: 00000000
Capabilities: [70] Express (v2) Endpoint, MSI 01
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 26.000W
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed 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 5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, OBFF Via message/WAKE#
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
Capabilities: [b0] MSI-X: Enable+ Count=32 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00000800
Capabilities: [d0] Vital Product Data
Not readable
Capabilities: [100 v2] 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: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [148 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [168 v1] Device Serial Number 01-00-00-00-68-4c-e0-00
Capabilities: [178 v1] Transaction Processing Hints
No steering table available
Capabilities: [204 v1] Latency Tolerance Reporting
Max snoop latency: 0ns
Max no snoop latency: 0ns
Capabilities: [20c v1] L1 PM Substates
L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
PortCommonModeRestoreTime=150us PortTPowerOnTime=150us
L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
T_CommonMode=0us LTR1.2_Threshold=0ns
L1SubCtl2: T_PwrOn=10us
Capabilities: [21c v1] Vendor Specific Information: ID=0002 Rev=4 Len=100 <?>
Kernel driver in use: r8169
Kernel modules: r8169

2. Second network card for subnet 192.168.1.* Does not work
Doesn't work now, but previously worked.
I also took it out of this computer and inserted it into another to check if she died, but in another computer it worked fine

05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev ff) (prog-if ff)
!!! Unknown header type 7f
Kernel driver in use: r8169
Kernel modules: r8169


Then I tried to see what 'ip addr show' shows.
1. For on-board network card
3: enp6s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master vmbr0 state UP group default qlen 1000
link/ether f0:2f:74:2e:7a:96 brd ff:ff:ff:ff:ff:ff

2. For the second network card
2: enp5s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast master vmbr1 state DOWN group default qlen 1000
link/ether 00:e0:ff:68:10:13 brd ff:ff:ff:ff:ff:ff

This is how my file /etc/network/interfaces looks like

auto lo
iface lo inet loopback

iface enp6s0 inet manual

iface enp5s0 inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.0.241/24
gateway 192.168.0.1
bridge-ports enp6s0
bridge-stp off
bridge-fd 0

auto vmbr1
iface vmbr1 inet manual
bridge-ports enp5s0
bridge-stp off
bridge-fd 0

It is strange that in the web interface the enp5s0 network device is marked as working
Screenshot_5.jpg

On my Keenetic Giant router, I see that the cable is connected to port 5 and devices on network 0, although in fact, there are about 100 virtual machines turned on, but they cannot connect due to some problems with the second network card.

Screenshot_6.jpg
 
Last edited:
I have now installed
Linux kernel version 5.11.21-1-pve # 1 SMP PVE 5.11.21-1 ~ bpo10 (Wed, 02 Jun 2021 11:34:45 +0200)
PVE manager version pve-manager / 6.4-10 / bdf15155
 
I type in terminal
ip link set enp5s0 up
and then reboot
Second network card now working
 

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