Questions tagged [bridge]
Bridge is the term used in computing to describe a device that connects two or more networks that use different protocols or equal to two segments of the same network using the same protocol, for example, ethernet or token ring.
591
questions
0
votes
0
answers
13
views
Linux: virtual interfaces with multicast
I have a Linux process which communicates with external world using TCP and UDP. Also it does send message over multicast. Now I want to test the communication by mocking external communication. I ...
- 1
0
votes
2
answers
65
views
Can I still use the Ethernet ports on an ISP's modem after setting it to bridge mode?
So right now I have two network devices: A Huawei modem/router from my ISP, and an ASUS WiFi router that I bought separately. How I currently have it set up is the ASUS router is running on AP mode, ...
- 1
2
votes
0
answers
23
views
Connecting VM to outside world through a bridge
Currently setting up a VM (through AWS Firecracker, that shouldn't matter though, it just takes tap0 and uses that for eth0 in the guest) which should connect to the outside world. I've got the host ...
- 155
1
vote
1
answer
59
views
systemd brings up sshd before networkd, causing no ssh service
On my Ubuntu 23.04 system, systemd will attempt to bring up sshd before the network's bridge is brought up by systemd-networkd
First it reports: Cannot assign requested address
And then: br0: netdev ...
- 197
0
votes
0
answers
36
views
How to access a computer connected to LAN via another computer?
I have the following network configuration:
I wan to able to access the laptop through the entire network, I can't connect it to the switch directly because of physical constraints (there are more ...
- 101
0
votes
1
answer
85
views
Get static public IP from a VPS
I'm attempting to assign static public IP addresses directly to my OPNsense box on a local network. My VPS provides me with four IP addresses:
ens4 1.1.1.1
ens4:1 2.2.2.2
ens4:2 3.3.3.3
ens4:3 4.4.4.4
...
-3
votes
1
answer
85
views
If router is in bridge mode, is it still emitting EMF?
I have an Arris Surfboard SBG7400, and I put it in Bridge mode so as to avoid EMF radiation from keeping the router on (I live in a tiny place and it's in my bedroom). But my Wifi is still picking up ...
- 1
1
vote
0
answers
808
views
VMware bridged mode is not working, but NAT mode works fine
I recently updated my PC and found out that the bridged mode of VMware Workstation Player 17 stopped working, however NAT mode works fine.
Host OS is Windows 11 and guest OS is Ubuntu 18.04.
I've ...
- 11
0
votes
0
answers
43
views
Will a WIFI repeater act as a WIFI-to-Ethernet bridge
Due to a lapse by the electrician (who laid the cat6 cables and wired the sockets), one Cat6 cable did not reach the Rack. It is on the other side of the garage and I don’t want a messy cable up the ...
- 2,437
0
votes
0
answers
22
views
Mapping a MAC address of a Level2 switch to a name
With brctl showmacs br0 I can get a list of all the MAC addresses found on a bridge.
To make this more human-readable, I translate the output by replacing the MAC addresses with hostnames (for fixed ...
- 197
0
votes
1
answer
90
views
ISP router + TP-Link access point
I have a TP-Link WR841N router that I would like to setup as an access point and also to connect my Desktop station to it. The connection speed that I have when I connect desktop directly to the wire ...
- 219
0
votes
0
answers
228
views
Linux networking using macvlan interfaces
This setup is working for my needs but I don't understand it which concerns me e.g I assume it's possible a system update could break this functionality and if I don't properly understand then how can ...
- 1
1
vote
2
answers
95
views
Network switch in WIndows 10
I have 2 physical ethernet connections: Ethernet1 andEthernet2 on PC_A. Ethernet1 is connected to the router (DHCP). What I am trying to accomplish, is to enable a switch between Ethernet1 and ...
1
vote
0
answers
186
views
Static IP address not being assigned by DHCP server to host on a certain interface of a systemd-networkd bridge
I've got a box that I configured as a wired/wireless router, using systemd-networkd to define a bridge (br0) between enp3s0 (wired) and wlp1s0 (wireless) interfaces, with the systemd-networkd DHCP ...
- 111
1
vote
1
answer
309
views
Port forwarding issue with 4G Modem in Bridge Mode and WiFi router
I'm trying to set up public port forwarding so that external requests get forwarded to my Home Assistant server.
My setup is:
Internet
|
4G Modem with SIM Card (Huawei B535-333)
|
Linksys Velop WiFi ...
- 284
0
votes
1
answer
162
views
Adding physical Ethernet ports from non-root network namespace to OVS bridge
I have an Ubuntu 20.04 server with four Ethernet interfaces: eno5, eno6, eno7, and eno8. The first two belong to the root netns, and the last two belong to a new netns called netns1. An ethernet cable ...
- 3
0
votes
1
answer
1k
views
Bridge a dummy and physical ethernet interface on Linux
I'm trying to bridge a dummy interface, dummy0, and a physical interface, eth1. I've used the following commands for creating a bridge, br0, for the two interfaces, but they aren't getting bridged. ...
0
votes
2
answers
293
views
Can I slave a MACVTAP interface to a bridge?
Initial evidence suggests no:
$ sudo ip link add br0 type bridge
$ sudo ip link add macvtap0 link eth0 type macvtap
$ sudo ip link set macvtap0 master br0
RNETLINK answers: Device or resource busy
Is ...
- 515
0
votes
1
answer
92
views
Nested bridging: Can reach hosting VM, but not Domain-0 nor upstream network (solved)
The setup of my box is as follows:
I'm using Xen on bare metal, with Domain-0 (Debian Bullseye) serving as X terminal. Here I have created a bunch of VMs (including the one that is connecting to the X ...
- 211
0
votes
0
answers
253
views
Connecting 2 Routers in Bridge Mode. Router configuration
I am trying to connect two routers via a bridge as I am receiving poor connectivity on my first floor. I am planning to connect the 2 routers with Ethernet cable from LAN port of Router 1 (R1) to LAN ...
1
vote
1
answer
44
views
Forward internet and use as Gateway
Windows Server 2019.
Fairly simple (I guess). I have two ethernet adaptors, one has internet and the other don't. The second will be on the same network as another computer and this computer need to ...
- 11
0
votes
0
answers
554
views
Creating network bridge sometimes (but not always) fails with error "an unexpected error occurred while configuring the network bridge"
I am currently trying to set up multiple identical systems. All are using WIndows 10 LTSC 2019 as operating system, and have three Intel I210 NICs installed. What I am trying to do is to manually ...
- 1,329
0
votes
0
answers
47
views
Home Router drawing wrong IP address
I have a house Netgear router (with an IP address for example 192.168.1.1). I have an Ubiquity nanostation with a station and a access point going to a shop with a Linksys router there (with an IP ...
- 1
0
votes
1
answer
542
views
Ubuntu 22.04 net namespace with veth connected to bridge unable to ping gateway
I'm having trouble setting up a net namespace to use for my VPN. The weird part is that this script/setup was working, and has suddenly stopped within the last couple weeks.
I have a single ethernet ...
- 9
2
votes
0
answers
78
views
Why does my USB to IDE / SATA bridge only work on old PCs?
I have an old USB2.0 to IDE / SATA bridge that I like to use for my loose HDDs, but on my newer PCs they always make problems.
The access to the HDD is slow or fails completely with an USB error.
The ...
0
votes
1
answer
28
views
Retrieving Data from LAN Computer with Secondary Internet-enabled Machine
So we have a trailer with a lidar instrument (retrieves wind information) whose software stores the data locally onto a Win10 laptop connected via router with no internet access. The trailer is in a ...
- 1
1
vote
0
answers
2k
views
KVM guest connected to bridge can only communicate with host
UPDATE:
Changed host from mint to ubuntu now it works fine
I have a linux mint host machine with a network bridge with a static IP Address. Here is the bridge:
I have an Ubuntu guest created in ...
- 111
0
votes
0
answers
643
views
How to make a VM on a bridged network interface accessible from LAN?
Context
I have the following network :
a router (IP 192.168.2.254) which handles DHCP on 192.168.2.x network
a computer1 (IP 192.168.2.1) under Linux (Debian 11) using ufw as firewall
a computer2 (IP ...
- 81
0
votes
0
answers
194
views
Change Genymotion/VirtualBox IP address from 192.168.56.103 to 192.168.0.103 on macOS
How we can change VirtualBox/Genymotion IP address from 192.168.56.103 to 192.168.0.103? (my wifi local IP address is in this class)
Cause other devices in my local network don't see that 192.168.56....
- 133
0
votes
0
answers
67
views
How to configure all other eth interface to send traffic to one eth port
I have an Ubuntu server that has four ethernet ports. Two are unused (in the future I'll use all four), and the first two are being used now. One is connected to a modem so the Linux machine has ...
- 107
0
votes
1
answer
34
views
Static IP for a VM
I've an existing network with multiple components. DHCP server is setup on router with range 192.168.0.11-254/24, addresses below are static IPs set on the devices directly. The setup works great so ...
- 101
0
votes
0
answers
320
views
Setup bridge network systemd-networkd
I need to setup a bridge network on my machine but each time I try, the bridge does not get an IP and my ethernet card eno1 does not have access to the internet.
Here is my setup for systemd-networkd:
...
- 123
0
votes
0
answers
119
views
Linux - using bridged interfaces during the STP blocking and listening phases
We're doing some custom networking on Linux. We have Ethernet ports which carry both a control plane VxLAN and an unencapsulated data plane.
When two interfaces on the same host are part of the same ...
- 515
0
votes
2
answers
2k
views
Ubuntu trunk forwarding or bridging between two physical linux interfaces eth0 and eth1 - OpenvSwitch or etc
I want to learn, if it is possible? and how to configure, a ARM based Ubuntu Server system as a bridge between two physical network interfaces to pass all Vlan trunk traffic through eth0 and eth1.
...
- 113
3
votes
1
answer
3k
views
How does Linux determine the default MAC address of a bridge device?
How does Linux determine the default MAC address of a bridge device? I know it is the same as "bridge id" from brctl show, but how is it calculated? Is the MAC address supposed to change ...
- 583
0
votes
1
answer
134
views
How to use a Wireless ADSL modem Router as a Access Point?
I have two modes similar this:
I live on the first floor of an apartment. Also one of the mentioned modem is inside my apartment (connected to the ADSL port) and has internet as well. I connect to it ...
- 105
1
vote
0
answers
941
views
Docker networking not working with bridged host interfaces
Here's the setup: (docker host is in between to monitor traffic via ntopng)
Router <---> Docker Host <---> PC
<192.168.1.1> <192.168.1.20> ...
- 73
1
vote
0
answers
331
views
How do I set up an Arris NVG558HX (Verizon) router/gateway so that my existing TP-Link Omada router can remain in service?
I have a home network that uses a TP-Link router, switches, and access points. I would like to be able to connect them to an Arris NVG558HX (Verizon) router/gateway. I currently use a DSL modem/...
- 11
2
votes
1
answer
972
views
How do I make a stateful bridge filewall with nftables?
The nftables wiki has an example, but it doesn't seem to work for me.
The page says that it should work since kernel 5.3, but it says "protocol error" when I try the exact commands from the ...
- 559
1
vote
1
answer
2k
views
Configuring pfSense for IPTV delivered via separate VLAN on WAN link
I am trying to set up pfSense as my primary Internet router, replacing the provider router.
Basic Internet connectivity works as it should: configure the external interface as a DHCP client, configure ...
- 980
0
votes
1
answer
275
views
Bridging an open public wifi (xfinitywifi) to a virtual machine
I have a virtualbox VM that I want to bridge xfinitywifi to. I'm connected to ethernet, and then xfinitywifi using a pcie wifi (so I can't do USB passthrough for the wifi). Using windows 10 as host.
...
- 1
1
vote
1
answer
529
views
tcpdump doesn't capture WiFi-to-WiFi traffic
I have configured a transparent bridge on a network that should capture all the traffic of its connected devices with tcpdump (see diagram 1).
The bridge is configured on a Debian 11 server and has an ...
- 13
0
votes
0
answers
172
views
Devices in bridged network don't see eachother
I have an IoT device with LTE connectivity, 2 ethernet ports and wireless antenna I'd like to use as a LTE router, meaning I would share the LTE connection to wifi and both ethernet ports. It is ...
- 1
0
votes
0
answers
36
views
Shell script to replace config file if server fails to go online after config change
So, my situation is as follows;
Due to CoViD restrictions I can't physically access a remote (debian 11) production server, but I'm forced to add/activate two physical network ports (NICs) on that ...
- 101
0
votes
1
answer
377
views
Nested guest VM on ESXI is not able to access internet but can access host
I am running x86 Ubuntu 20 on ESXI 7.0 (lets call this as my host VM). On top of Ubuntu VM, I am launching ARM64 RaspiOS using QEMU (this is my guest VM). So you can say I have nested VMs.
From my ...
- 950
0
votes
1
answer
159
views
Using a 4 NIC mini-server as a switch while using bond mode 4
Already tried pulling answers out of the debian docs, but it's a rare combination, so I'm asking this here; A small business I work for has a mini computer, running a minimal Debian 11 and some LAN ...
- 101
0
votes
1
answer
7k
views
VMware - Can't ping host machine and VM even in bridged mode
I have set my Ubuntu virtual machine in bridge mode so that my VM could communicate with my host machine but I can't seem to receive any ping replies from both ends. My host machine is windows 10.
...
- 1
0
votes
1
answer
183
views
Device communicates with server through bridge, unable to capture all packages
I'm trying to reverse engineer a device to be able to access its API locally. Currently it is communicating with an online server, where I can log into to see its data.
Set up
The device connects ...
- 113
0
votes
1
answer
201
views
What will be the IP of the following bridge interface?
I have a system that currently has 2 network interfaces, eth0 (ethernet cable) and wlan0 (internal wifi). eth0 interface has IP of 192.168.1.100 which is given by my router and wlan0 has IP of 192.168....
0
votes
3
answers
1k
views
Why the bridge0 has a Ethernet port address? it refers to what?
I use ifconfig -a list the bridge0 detail information:
bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 index 7
eflags=41000000<ECN_ENABLE,FASTLN_ON>
...
- 525