Questions tagged [network-bridge]
Questions about configuring and using bridging interfaces
330
questions
0
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1answer
47 views
Is there a way to create an Open vSwitch internal port with netplan?
As per the Title really. I can't work out if there's a way to do this or not. The only mention of ports in the docs are "patch ports" as pairs of ports. The example shows the use of these ...
0
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0answers
26 views
Can Ubuntu 20(core) - arm64(pi4) - function as a gateway between a wireless hotspot and wired router?
Pardon my crude topology illustration but here is my problem. I have been trying to function the 2 NICs of the Pi4(arm64) to function simultaneously as a bridgeTOPOLOGY. The wireless NIC will connect ...
1
vote
1answer
32 views
Isolate hosts on Netplan defined Bridged network
I've Ubuntu 20.04 LTS for Raspberry PI and I've created a wireless access point using the snapon wifi-ap package. That allows hosts to attach to a 192.168.8 network and works beautifully the Ubuntu ...
0
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0answers
115 views
Ubuntu 20.04 WiFi access point without subnet/DHCP server
I have Mac Mini with Ubuntu 20.04 server installed (so no GUI).
And want to use it as a WiFi access point, without NAT/DHCP server (so, given that main Mikrotik router is 192.168.88.1, both Mac Mini ...
0
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0answers
27 views
Unable to enable SRIOV for a Ethernet port [duplicate]
I get a permission denied error when I run the command
sudo echo '7' > /sys/class/net/eno99/device/sriov_numfs
This is the error:
bash: /sys/class/net/eno99/device/sriov_numfs: Permission denied
...
0
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0answers
29 views
Linux vm suddenly lost internet connection
I got a Vm with Ubuntu that i am running via virtualbox. Everything worked fine until yesterday. after I started the vm it didnt had a internet connection anymore. I didnt change any of the network ...
0
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0answers
109 views
Netplan bridge master getting a static IP address instead of the bridge
I am trying to configure a bridge for KVM guests and host connectivity. The bridge is never configured right, the physical NIC always ends up getting the static IP address and the bridge is assigned a ...
0
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0answers
92 views
Ubuntu Server 20.04 LTS not reachable
my Ubuntu 20.04 LTS server looses its inbound LAN connection after some days of operation. The outbound connection works: I receive status e-Mails from that host. Bridged containers work as they ...
0
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1answer
106 views
do 20.04 bridges work? what's amis with mine? do i need a special kernel?
Trying to setup a bridge for libvirt using 20.04 netplan. Network is fine before trying to define a bridge, but doesn't come up with my bridge definition. What am i missing?
Do i need a special kernel?...
1
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1answer
50 views
Using Ubuntu as router for CCTV
I set an system in my house and I have some issues.
I am using CCTV in my house, the DVR is located far from my internet for plug it by cord, so I toke an unused Raspberry pi 3 that I had and set him ...
0
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0answers
33 views
Can't authenticate to AP created with Netplan
I have created a wi-fi network on an Ubuntu 20.04.1 server with netplan. If the network is open with no password then I can connect just fine and life is good. I can still see the network when I have ...
0
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1answer
199 views
Ubuntu 20.4 KVM bridged network now working on guest
I am in the process of migrating a machine from Debian to Ubuntu 20.4.
Everything seems to be working fine other than I am unable to get KVM VM's to connect directly to the network. Switching to 'NAT' ...
0
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1answer
217 views
hostapd vs netplan: wlan0 not added to bridge at boot
Like many people, I'm using a Raspberry Pi 4B running Ubuntu 20.10 arm64 as a LAN/wifi bridge, using hostapd and netplan. Everything works fine except that the bridge is not configured correctly when ...
0
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0answers
90 views
Ubuntu 20.04 - Wake on lan does not work on a bridged interface
I am using Ubuntu 20.04 Server. Using a basic DHCP setup, I was able to use WOL with no issues. I had to build a service to ensure ethtool -s enp1s0 g stuck after a reboot. WOL worked great.
Now I ...
0
votes
1answer
55 views
Transfer files via USB 3 bridge
I want to transfer files between 2 machines that run both Ubuntu 20.04. I have an ethernet connection via cross-over patch using samba, but the speeds are horrible. I want to test a USB connection ...
0
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0answers
48 views
Docker Container in virtualbox, front page accesible in Nat but no in Bridge
I have a docker container up and running on ubuntu server in virtualbox in a mint host.
With Nat i can access to the front page via port 80 from the host browser.
If i just change to bridge i get '...
0
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1answer
650 views
KVM Bridge on Ubuntu 20.04 on Raspberry Pi 4
I cannot get networking inside a guest VM to work with KVM on a Raspberry Pi 4 8GB running the official Ubuntu 20.04 image. I have my networking configured correctly, as far as I can tell. And I'm ...
0
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1answer
42 views
What do these iptable rules mean?
These:
sudo iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE
sudo iptables -A FORWARD -i tun0 -o wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptables -A FORWARD -i wlan0 -o tun0 -j ...
0
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0answers
30 views
Problem with bridging wireless interface onto OVS
Im trying to bridge my wireless interface on which I run hostapd onto ovs bridge (I have patched version of hostapd: https://github.com/Unomic/hostapd_ovs).
I tried this through command sudo ovs-vsctl ...
1
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1answer
1k views
Ubuntu 20.04 KVM, netplan with bonding, vlan and bridges
I am preparing migration of an UBUNTU 16.04.7 server with 5 NIC's to 20.04.
My testing server has 4 NIC's: 2 onboard and 2 as Intel Pro NIC. Configured in 00-installer-config.yaml. The first NIC is ...
0
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0answers
39 views
How to link the tap interface with the LXC bridge?
Hello All and thank you for allowing me to ask this question.
I am running an unprivileged custom LXC container that is running on top of a Ubuntu host, that at the same time is running on Virtual Box....
1
vote
1answer
184 views
Netplan with bonded NICs and VLANS and bridges not working
I have a netplan issue. Config is below. Bond seems to be working but I cannot connect to the network VLAN128 (br128) which is bridged on bond. The hardware and bonds worked before the server upgrade ...
0
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1answer
442 views
LXD - Assign public IP to a container
I have several static public IP addresses on my host machine. I want to assign that IP to a certain container, but I cannot really find any updated info about that. I tried to create a new network, ...
0
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1answer
59 views
Ubuntu as a Router
I am working on a project that uses a computer with a touch screen. This computer has 2 Ethernet ports.
Because of licensing problems, we need to use Ubuntu. The HMI program we created with Java ...
0
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1answer
1k views
Netplan inconsistent indentation Ubuntu 20.04 server
I am having an inconsistent indentation problem in a netplan configuration. I would like, if possible, someone to explain to me where I'm going wrong.
Thank you.
The error is:
/etc/netplan/50-cloud-...
0
votes
1answer
256 views
Looking for /etc/network/interfaces is missing?
So I have a newly installed ubuntu machine. I was going to enter some network setup, but this file is missing: /etc/network/interfaces. I also checked with root. There is a local loopback on the ...
0
votes
1answer
624 views
No internet connection on host when Ethernet is Bridge for Guest VM (Ubuntu 20.04)
I setup a bridged connection modifying the netplan file in /etc/netplan/ and setup the bridge device using nmcli. Below is my netplan file:
# Let NetworkManager manage all devices on this system
...
0
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0answers
163 views
How to connect Ubuntu 20.04 server to internet through a windows 10 laptop with wifi connectivity
I have recently installed Ubuntu 20.04 server on DL360 G8. My installation place does not have internet. I can only access internet through my mobile data where also my laptop is hot spotting.
I ...
0
votes
1answer
983 views
Ubuntu 18.04 netplan create bridge from wifi to ethernet
I am running ubuntu 18.04 and do not have much experience with networking. This ubuntu server runs on our robot and is supposed to act as a wireless to lan bridge for the rest of the wired modules on ...
0
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0answers
140 views
netplan bridge cannot ping local network devices
I know there are a lot of problems like mine in here, but I still cannot solve my problem.
I updated my Ubuntu from 18.04 to 20.04 and wanted to start using netplan. Unfortunately I'm not able to ping ...
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0answers
471 views
How to enable Networking inside a `systemd-nspawn` container?
How can I get networking to work inside a systemd-nspawn container in Ubuntu 20.04? I want the container to get an IP address from local DHCP server, perform DNS lookups using my configured name ...
0
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0answers
30 views
How to disable or delete Network bridge adapter (wlp9so) on Ubuntu or Android smartphone?
I have a problem.
I am share internet over Wi-Fi from my mobile phone(Android) to notebook(Ubuntu).
My Wi-Fi connection name some times changed from AndroidAP to AndroidAP(wlp9so) and I don't know why?...
0
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0answers
300 views
Problem to setup network-bridge with netplan under Ubuntu 18.04 dedicatet server
I need some help with an server, netplan and a network-bridge..
I want do setup an kvm under my ubuntu 18.04 server, who is reachable from outside. So i need a network-bridge.
So i have simulated the ...
1
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0answers
443 views
Trouble with Ubuntu 18.04 netplan bridge on hetzner server
i need some help with an hetzner server, netplan and a network-bridge..
I want do setup an kvm under my ubuntu 18.04 hetzner server, who is reachable from outside. So i need a network-bridge.
So i ...
0
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0answers
586 views
Network Problems after creating network bridge
i wanted to install some virtual machines on my server using KVM so for this purpose i created a network bridge. so far so good...
My OS is Ubuntu 20.04.
I change the 01-netcfg.yaml file in /etc/...
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0answers
40 views
Using 2 wifi adapters to create a hotspot
I'm trying to create a wifi hotspot with an external wifi apdater. What I have is an onboard wifi (wlan0) that is connected to the internet and an external one (wlan1). What I'm trying to do is bridge?...
2
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0answers
2k views
Cannot access an Ubuntu guest VM running under multipass on an Ubuntu Host from the outer network
Setup & Purpose
I use a headless Ubuntu server as VM host running a nextcloud appliance using multipass.
I want to access the VM from another Desktop System in the same network for testing.
local ...
1
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0answers
1k views
Share wifi connection with ethernet adapter with Netplan on Ubuntu 20.04
I have machine1 with two interfaces, wlan0 and eth0. wlan0 is connected to my home network via wifi and gets an address on 192.168.1.0/24. I would like to plug in machine2 to eth0 and have it also ...
0
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0answers
53 views
Suggested method for VLANs on libvirt-backed MAAS system?
I have a MAAS system that is (up to interface names) identical to the installation in this tutorial:
https://maas.io/tutorials/create-kvm-pods-with-maas#1-overview
I want to have multiple VLANs inside ...
0
votes
0answers
171 views
DHCP server + Wifi access point + bridge
I have an Ubuntu machine connected to an ethernet network of several devices. I want the Ubuntu machine to provide DHCP for the wired network, while also providing a wireless access point which ...
0
votes
1answer
224 views
Bridge networking for 18.04 NetworkManager host and KVM netplan guest
The goal is to have the guest on the same network as the host (use the same DHCP server as the host uses).
I got to the point where the host is configured via external DHCP, guest is configured with ...
4
votes
2answers
180 views
Transparently bridge (not route) a wired connection to act as another wireless AP
My new, shiny, home NAS-computer, running Ubuntu 20.04, has a gigabit wired connection and an ath-9k chipset dual-band (2.5 / 5 GHz) wifi card. My current wireless AP only has a 2.5 GHz radio, and in ...
1
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0answers
855 views
ubuntu 20.04 reboot hanging - clamping QRV from 1 to 2
my system is ubuntu 20.04, I use it mainly for LXD and Juju development..
I noticed the system asking for a reboot so I obliged.. but it is not rebooting and instead when I hit [esc] to watch the log ...
0
votes
1answer
693 views
Problem installing Dual Band USB Adapter 2.4/5GHz Wi-Fi on Ubuntu 18.04.4
DUAL BAND USB ADAPTER 2.4/5GHz 1200(866+300)Mbps WIRELESS SPEED WITH 802.11ac
So lately I bought Dual Band USB Adapter with the driver on the CD to install on Windows, Mac, and Linux.
I'm using Ubuntu ...
0
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0answers
38 views
Is Ubuntu able to isolate between network port (TCP/UDP)?
I have unetlab (EVE-NG) install on Ubuntu. An issue is between virtual device to virtual device cant do ICMP. Normally it should communicate between port
For example if EVE-NG mgm ip is 10.10.10.10 ...
0
votes
1answer
217 views
How to configure netns in xx.yaml?
Running on Ubuntu 18.04.
Here is an example via command-line:
sudo ip netns add testBB
sudo ip netns list
sudo ip netns exec testBB ip link set vnet4 netns testBB
sudo ip netns exec testBB ip link ...
0
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0answers
31 views
Share wireless connection with fixed ip, on different networks
This question How to share a wireless connection through ethernet with fixed ip addresses? mentions how to share a wireless connection through ethernet with a fixed ip address. This is useful when ...
0
votes
1answer
484 views
No IP for host ethernet when network bridging with netplan
I used netplan on Ubuntu 20.04 Desktop and used a yaml file like the one on this website:
https://webby.land/2018/04/27/bridging-under-ubuntu-18-04/
However, my host doesn't have a ip now? How can I ...
2
votes
1answer
5k views
Ubuntu 20.04 Netplan Bridge interface fails at boot
2 new Ubuntu Server 20.04 installs (1 on Hyper-V 1 on bare metal) fail to correctly start bridge interface at boot time. running netplan apply manually will successfully start the bridge (this is ...
1
vote
1answer
53 views
How do I save a virtual interface?
Say I create a virtual bridge interface and configure it as follows:
ip link add type bridge name br1
ip link addr add 10.10.10.1/24 dev br1
How do I make it so that this configuration persists ...
