To elaborate the answer from @Ingo: please consider using the link
ln -s /run/systemd/resolve/stub-resolv.conf resolv.conf
instead of the link to /run/systemd/resolve/resolv.conf. This enable the "integrated" DNS stub and enables things like per-interface DNS server which could be important if you use VPNs that provide their own DNS server with non-public ...
After some years there have been found a solution to this specific problem with Raspberry Pi. You very clearly described that you want to have a bridge on the RasPi but this cannot be done with a WiFi client connection to the router. For this it must supported by the WiFi chip but it doesn't. For further information about this look at Raspberry Pi WiFi to ...
According to Raspberry Pi Forums: RPi3 wlan0 doesn't change with predictable names:
On the Pi only USB devices (like the ehternet adapter) use the predictable names
The wifi adapter uses SDIO and apparently there's no mechanism for predictable names using that channel.
So predictible interface names will never work with the onboard wifi device.
This solved my problems or is this just my setup?
With a prebuilt custom version of Raspbian Buster on Pi 3 the dhclient was a problem interfering with dhcpcd so first had to remove the isc-dhcp-common and isc-dhcp-client packages.
Then /etc/network/interfaces with the wpa-conf for /etc/wpa_supplicant/wpa_supplicant.conf and desired /etc/dhcpcd.conf ...
I assume you are using Raspbian. On this, dhcpcd is configured to support normal networking out of the box, e.g. use WiFi in managed mode with hook scripts in /lib/dhcpcd/dhcpcd-hooks/. I'm fairly sure that dhcpcd does not support an ad-hoc network with this configuration so you have to do it all by hand.
I suggest to use systemd-networkd to setup an ad-hoc ...
The problem is that your script does not run with root rights. You took the commands as given in the tutorial and where needed you prepend them with sudo. This does not work with redirection > and << because redirection then is related to sudo and not to cat as intended. If you look at the tutorial you will find as very first command
rpi ~$ sudo -...
I don't overview when and where the 4th RasPi doesn't work so I can't verify my idea about the error. But I had a similar problem that an additional device doesn't connect to the network but couldn't verify a hardware problem. The reason was simply that the pool of ip addresses from the DHCP server was used up and the new device doesn't could get an ip ...
The easiest way without overthinking it too much, would be to just set up one of the RasPis as an access point that the others connect to. Make your robotic car it's own WLAN.
If you prefer a wired connection, simple communication can work over a basic serial UART. If you have a lot of streamed data, SPI may be a possibility as well. Lastly, you can add ...
From the information you have given so far it seems that the RasPi has a working WiFi interface wlp2s0. As shown by ip addr it has a dynamic ip address 192.168.1.160/24 that is usually given by a DHCP server on the network. So it must be connected to a remote access point and everything is good. The command iw wlp2s0 link would give us more details about the ...
i bought the EW-7611ULB wifi & bluetooth dongle. but bluetooth fails to work on my Ubuntu 16.04. i just modified the "EW-7611ULB_Linux_Bluetooth_Driver_18.104.22.168" bluetooth driver to work on my Ubuntu 16.04.02 LTS with the following kernel version -
Linux xxx 4.16.0 #1 SMP Wed Sep 5 18:09:34 CST 2018 x86_64 x86_64 x86_64 GNU/Linux
I did not do any fine ...
You haven't specified concurrent calls and if you are doing transcoding in Asterisk, but the short answer is YES a raspberry Pi 3 can do both if you don't have a lot of transcoding and playing a lot of voice prompts.
I was also having this issue for my automation solution Ive provided to Industry.
Mostly It depends on what type of security is implemented in WPA-Enterprise WiFi settings done by IT admins while setting up RADIUS server and WiFi setup.
Its difficult to guess so mostly it looks like impossible to connect to few Enterprise networks without any help from IT ...
This is what man dhcpcd.conf tells
inform [...] sends a DHCP INFORM instead of DISCOVER/REQUEST. This
does not get a lease as such, just notifies the DHCP server of the
address in use. You should also include the optional cidr network
If you set static ip_address then dhcpcd will not attempt to obtain
a lease and just use the ...
It seems like the wifi_suppicant service is down. This happened to me 15 days ago while I was updating software. After flashing the latest buster release the problem was gone. So flash the sdcard and you will find it corrected. Backup anything important before doing so.
To delete restricted files you can use rm in combination with sudo (execute with root rights). So to delete wpa_supplicant.conf you can execute on the command line:
rpi ~$ sudo rm /etc/wpa_supplicant/wpa_supplicant.conf
Repeat that with the names of the other files you want to delete. But you need wpa_supplicant.conf to connect to the hidden access point. ...
It is difficult to see what you have done (post text not illegible pictures) or how you actually created multiple files, but /etc/wpa_supplicant/wpa_supplicant.conf is owned by root.
It can easily be deleted at the command line with
sudo rm /etc/wpa_supplicant/wpa_supplicant.conf
See How to set up networking/WiFi for detail of setting up networking.
I use this /etc/wpa_supplicant/wpa_supplicant.conf:
frequency=2412 # channel 1
and my Samsung smartphone connects to the RasPi without any problems. You have to configure the ...
You try to run Raspbian Stretch on a Raspberry Pi 4. On the release notes you will find:
* Based on Debian Buster
* Support for Raspberry Pi 4 hardware
This means Raspbian Stretch as predecessor from Rasbian Buster does not support Raspberry Pi 4. Before continue troubleshooting please start again with Raspbian Buster.
With your ...
You have two physical WiFi interfaces available to create two access points, the built-in wlan0 and that from the USB/WiFi dongle wlan1. With systemd-networkd you can make two independent services. Then you can use routing or bridging to get connected to the internet with your home internet router. With routing you have different subnets with different ip ...
My commendations to all. This will get me to a path I'm looking for. AC - tables along with the b-n+ tables. Thank you. When I started wireless networks they were 802.11 1mb protocols. Using an Omni & Uni-directional antenna's I did a lot of 802.11b+ networking. The AC stuff was way too expensive at the time. Compatibility was sparse.
In general you have two ways to use two or more interfaces: routing or bridging. As you already have found, bridging on Raspberry Pi is limited. For some use cases you can emulate bridging with proxy arp. But you use a virtual interface uap0 that is derived from the only available physical interface wlan0. As far as I know there is no experience to use proxy ...
For the static part I know the answer (with a clean install)
The new noops-Debian uses a different eth0=name it's in your case enxb827ebfa27e1
check this with
Edit in /etc/dhcpcd
(on top of the document)
static domain_name_servers=22.214.171.124 ...
You are misunderstanding something. Things doesn't work like that. Whenever pi is booted ,by default it automatically connects you with the wifi. And it stays open unless you close the connection. You can close the connection with a left click on the network menu.