My netplan config at /etc/netplan/wireless.yaml seems to be working well for my WiFi-to-USB adapter, but I seem to still get the native interface to come up. I would prefer to keep that down. Right now, sudo ifconfig wlp0s20f3 down doesn't seem to be persisting across reboots with config:
# See also:
network: version: 2 renderer: networkd wifis: wlx7ca7b0babcf7: dhcp4: yes dhcp6: no addresses: [192.168.7.12/24] gateway4: 192.168.7.1 nameservers: addresses: [8.8.8.8, 8.8.4.4] access-points: "my_network": password: "my_password"How can I adjust my netplan config to keep the native WiFi interface down? Is that something that can only be configured to be persistently off elsewhere?
Additional info
$ cat /etc/network/interfaces
# ifupdown has been replaced by netplan(5) on this system. See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
# sudo apt install ifupdownNote I have a LAN I connect to:
$ sudo lshw -C network *-network description: Wireless interface product: Intel Corporation vendor: Intel Corporation physical id: 14.3 bus info: pci@0000:00:14.3 logical name: wlp0s20f3 version: 00 serial: 0c:dd:24:1c:52:55 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=5.3.0-7629-generic firmware=48.4fa0041f.0 ip=10.53.189.39 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:16 memory:d3510000-d3513fff *-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0.1 bus info: pci@0000:26:00.1 logical name: ethA version: 12 serial: 80:fa:5b:7a:b1:cc capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 firmware=rtl8411-2_0.0.1 07/08/13 latency=0 link=no multicast=yes port=MII resources: irq:16 ioport:4000(size=256) memory:d3215000-d3215fff memory:d3210000-d3213fff *-network:0 description: Ethernet interface physical id: 1 logical name: ethA.200 serial: 80:fa:5b:7a:b1:cc capacity: 1Gbit/s capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=802.1Q VLAN Support driverversion=1.8 firmware=N/A link=no multicast=yes port=MII *-network:1 description: Wireless interface physical id: 2 bus info: usb@1:3 logical name: wlx7ca7b0babcf7 serial: 7c:a7:b0:ba:bc:f7 capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl88x2bu multicast=yes wireless=unassociated/etc/netplan/01-network-manager-all.yaml has contents:
# Let NetworkManager manage all devices on this system
network: version: 2 renderer: NetworkManagerSee also
22 Answers
Set your /etc/network/interfaces to this:
# ifupdown has been replaced by netplan(5) on this system. See
# /etc/netplan for current configuration.
# To re-enable ifupdown on this system, you can run:
# sudo apt install ifupdown
#
auto wlp0s20f3
iface wlp0s20f3 inet manual pre-up ifconfig $IFACE down pre-down ifconfig $IFACE down down ifconfig $IFACE downNote: you may have to sudo apt install ifupdown
Set your /etc/netplan/wireless.yaml to this:
network: version: 2 renderer: networkd wifis: wlx7ca7b0babcf7: addresses: [192.168.7.12/24] gateway4: 192.168.7.1 nameservers: addresses: [8.8.8.8, 8.8.4.4] access-points: "my_network": password: "my_password"sudo netplan --debug generate
sudo netplan apply
reboot
Just adding this here in case somebody lands from Google.
I wasn't trying to disable Wifi specifically with Netplan, just disable it in any convenient way in a modern Ubuntu using Netplan.
Turns out the the best way that I found was to configure NetworkManager to ignore the wifi interface. I wasn't able to do it with Netplan only.
I found the information on how to do this here.
Basically add a file /etc/NetworkManager/conf.d/99-unmanaged-devices.conf
With the contents:
[keyfile]
unmanaged-devices=interface-name:ethWifi(replacing ethWifi with the name of your wifi device.)
And then restart NetworkManager with the command:
systemctl reload NetworkManagerAnd Wifi interface was down and did not connect again.
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