Network Setup for Ubuntu 2020.4 LTS

Configure Netplan

Netplan is the network configuration abstraction renderer utility for a linux system. In order to name the interfaces based on their MAC addresses edit the following configuration file: /etc/netplan/01-network-manager-all.yaml and apply changes sudo netplan apply (might require system reboot). Follow the 01-network-manager-all.yaml configuration example below and make the necessary changes based on your MAC addresses.

network:
  version: 2
  renderer: NetworkManager
  ethernets:
    netfpga0:
      match:
        # netfpga mac address of the first interface (macs are set in netfpga driver) 
        macaddress: 02:53:55:4d:45:00
      optional: true
      set-name: nf0
    netfpga1:
      match:
        macaddress: 02:53:55:4d:45:01
      optional: true
      set-name: nf1
    netfpga2:
      match:
        macaddress: 02:53:55:4d:45:02
      optional: true
      set-name: nf2
    netfpga3:
      match:
        macaddress: 02:53:55:4d:45:03
      optional: true
      set-name: nf3
    nic0:
      match:
        # mac address of your nic interface
        macaddress: xx:xx:xx:xx:xx:xx
      optional: true
      set-name: eth0
    nic1:
      match:
        # mac address of your nic interface 
        macaddress: xx:xx:xx:xx:xx:xx
      optional: true
      set-name: eth1

Disable Avahi daemon

To disable the daemon edit /etc/avahi/avahi-daemon.conf and change the following::

use-ipv4=no
use-ipv6=no

then run the following command to restart the service:

[user@nf-test109]# sudo service avahi-daemon restart

Disable IPv6

To temporary disable IPv6 run the following commands:

[user@nf-test109]# sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1
[user@nf-test109]# sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1
[user@nf-test109]# sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=1

For the reference_router hardware testing, it is recommended to disable IPv6 at boot time by editing /etc/default/grub, adding/extending the following lines to the file:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash ipv6.disable=1"
GRUB_CMDLINE_LINUX="ipv6.disable=1" 

and updating GRUB sudo update-grub.

IGMP traffic

Occasionally multicast traffic can also be seen on the interfaces, i.e., igmp.mcast.net: igmp v3 report and interferes with the testing traffic set. Most likely IGMP is a chrome-based browser origin.

Console access to microblaze in reference designs

All reference designs contain the microblaze augmented with uart, which is routed via USB-JTAG connector and can be accessed on ttyUSB1 using i.e., minicom tool.

sudo minicom --device /dev/ttyUSB1 -b 115200

If successful your terminal will print the following:

============ NetFPGA-SUME ============
m: Manual Test 
Select: