Ubuntu Netplan network config ethernet wireless wlan

General

• vi /etc/netplan/01-netcfg.yaml
• netplan apply

Ethernet static

Example:

• cat /usr/share/doc/netplan.io/examples/static.yaml

  • network:
      version: 2
      renderer: networkd
      ethernets:
        enp3s0:
          addresses:
            - 10.10.10.2/24
          gateway4: 10.10.10.1
          nameservers:
              search: [mydomain,otherdomain]
              addresses: [10.10.10.1, 1.1.1.1]

Wireless

Required packages

• apt install wireless-tools wpasupplicant

General Info

• iwconfig
• iwlist wlp5s0 scan

Example config from package:

• cat /usr/share/doc/netplan.io/examples/wireless.yaml

  • network:
      version: 2
      renderer: networkd
      wifis:
        wlp2s0b1:
          dhcp4: no
          dhcp6: no
          addresses: [192.168.0.21/24]
          gateway4: 192.168.0.1
          nameservers:
            addresses: [192.168.0.1, 8.8.8.8]
          access-points:
            "network_ssid_name":
              password: "**********"

Configure Wireless with DHCP

• iwconfig -> get device name e.g. "wlp5s0"
• vi /etc/netplan/01-netcfg.yaml

  • network:
      version: 2
      renderer: networkd
      ethernets:
        enp6s0:
          dhcp4: yes
      wifis:
        wlp5s0:
          dhcp4: yes
          access-points:
            "network_ssid_name":
              password: "**********"
    

• netplan --debug generate

• netplan apply
• networkctl status enp6s0
  • -> when changing from dhcp to a static ip, the dhcp ip is not removed.
    Any other way than a reboot to fix this?
• ifconfig
• dmesg