** Summary changed:

- Intel 710 series INC can't receive any packet on 18.04 & 18.10  
Ubuntu-arm64-server 
+ Intel 710 series NIC can't receive any packet on 18.04 & 18.10  
Ubuntu-arm64-server

** Package changed: mutter (Ubuntu) => linux (Ubuntu)

** Summary changed:

- Intel 710 series NIC can't receive any packet on 18.04 & 18.10  
Ubuntu-arm64-server
+ Intel XL710 series NIC can't receive any packet on 18.04 & 18.10  
Ubuntu-arm64-server

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https://bugs.launchpad.net/bugs/1824072

Title:
  Intel XL710 series NIC can't receive any packet on 18.04 & 18.10
  Ubuntu-arm64-server

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  ## PCI info for the NIC XXV710DA2BLK
  pci@0000:8e:00.1  enp142s0f1  network    Ethernet Controller XL710 for 40GbE 
QSFP+

  ## link detected & promisc mode turned on
  $ ip link list enp142s0f1
  3: enp142s0f1: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc mq 
state UP mode DEFAULT group default qlen 1000
      link/ether 3c:fd:fe:bb:cf:61 brd ff:ff:ff:ff:ff:ff

  $ sudo ethtool enp142s0f1
  Settings for enp142s0f1:
          Supported ports: [ FIBRE ]
          Supported link modes:   40000baseCR4/Full
          Supported pause frame use: Symmetric
          Supports auto-negotiation: Yes
          Supported FEC modes: Not reported
          Advertised link modes:  40000baseCR4/Full
          Advertised pause frame use: No
          Advertised auto-negotiation: Yes
          Advertised FEC modes: Not reported
          Speed: 40000Mb/s
          Duplex: Full
          Port: Direct Attach Copper
          PHYAD: 0
          Transceiver: internal
          Auto-negotiation: on
          Supports Wake-on: d
          Wake-on: d
          Current message level: 0x00000007 (7)
                                 drv probe link
          Link detected: yes
                
  $ sudo ethtool -i enp142s0f1
  driver: i40e
  version: 2.8.10-k
  firmware-version: 6.01 0x800035da 1.1747.0
  expansion-rom-version:
  bus-info: 0000:8e:00.1
  supports-statistics: yes
  supports-test: yes
  supports-eeprom-access: yes
  supports-register-dump: yes
  supports-priv-flags: yes

  ## Kernel info
  5.1-rc3+ commit 5e7a8ca319268a70a6c7c3c1fde5bea38e1e5539

  ## Packet generated by IXIA
  ## XDP & tcpdump can't capture any packet.
  $ sudo ./samples/bpf/xdp1 -N enp142s0f1

  $ sudo tcpdump -i enp142s0f1
  tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
  listening on enp142s0f1, link-type EN10MB (Ethernet), capture size 262144 
bytes
  15:08:50.176524 IP6 net-arm-thunderx2-03 > ff02::16: HBH ICMP6, multicast 
listener report v2, 1 group record(s), length 28
  15:08:50.588515 IP6 net-arm-thunderx2-03 > ff02::16: HBH ICMP6, multicast 
listener report v2, 1 group record(s), length 28

  
=========================================================================================
  Ubuntu 16.04.5 LTS with Kernel 4.15.0-43-generic + Intel 710 NIC (The same 
NIC XXV710DA2BLK):
  tcpdump worked as expected.

  $ sudo ethtool -i enp138s0f0
  driver: i40e
  version: 2.7.29
  firmware-version: 6.80 0x80003d05 1.2007.0
  expansion-rom-version:
  bus-info: 0000:8a:00.0
  supports-statistics: yes
  supports-test: yes
  supports-eeprom-access: yes
  supports-register-dump: yes
  supports-priv-flags: yes

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