Questions tagged [network-namespaces]
The network-namespaces tag has no usage guidance.
149
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What happens with bridge packets after they arrive at bridge?
Hello I have a simple setup for explanation purposes created with following scripts:`
env.sh
CON1="con1"
CON2="con2"
NODE_IP="10.0.0.20"
TUNNEL_IP="172.16.1.100&...
- 103
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18
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Cannot find how to create network namespace in udev rule
I want to write a udev rule (ACTION=add) that will create a new network namespace, move the newly added device to it and exec some commands inside it.
I was using irpoute2 to do so (Inside the rule):
...
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27
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Debian network namespace isolation
I have an AppImage which I need to run 3 instances of, concurrently. Each instance will use it's own profile (Home directory). That's all very easy:
HOME=/home/user/home AppName.appimage
Now the ...
- 101
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98
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Connecting two network namespaces over a bridge
I'm trying to make one network namespace to be able to ping another namespace via a bridge.
Here are the commands I'm executing:
# create two namespaces
ip netns add ns0
ip netns add ns1
# create a ...
- 247
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34
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How does k3s expose nodeports on linux?
I am investigating connectivity issues where k3s nodeport only accepts incommoding connections on one ip/interface but not on others. During this I realized that ports exposed using k3s nodeport do ...
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Virtual interface pair forwarding packets to each other
The goal is very simple: anything sent to pair1, as outgoing packet, should appear on pair0 as an incoming packet and vice versa. I am thinking on a layer3-only, virtual interface now.
tun could do ...
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22
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How to forward received data towards network namespace?
My goal is to forward received data to another pc. I have three devices (A, B and C) connected into the same network. A uses pyzmq to publish data in which B is subscribed. Then, B must send this ...
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233
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systemd Fails to Create Network Namespace after Debian Update
I'm running my own flavor of Debian (trixie, 6.1.0-9-amd64). I had set up a custom systemd service to establish a network namespace and route VPN traffic through it (which has worked flawlessly for ...
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169
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Application does DNS outside of its Network Namespace?
I am using unshare to create a network namespace:
unshare -rn bash
I already have the a working setup with veth-interfaces as described in this guide:
https://josephmuia.ca/2018-05-16-net-namespaces-...
- 21
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709
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Running Application in Specific Network Namespace Without Sudo?
I am trying to run google-chrome with a specific network namespace, but when I do there is no audio. I run the command so that it is running in the network namespace as follows:
sudo ip netns exec ...
- 11
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651
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Separate network namespaces for different users?
I'm running Arch Linux on a laptop. What I want to achieve:
Multiple users
When each user logs in on a tty (which could be while another user is logged in on another tty---they're all me), they're in ...
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107
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How to forward packets between net namespaces?
I have a lima VM with linux running Ubuntu 23.04 with kernel 6.2 and cgroupsv2. This VM is meant to serve as docker host. When I create docker network in this VM I get an interface in its own ...
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2
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99
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Redirecting locally originated traffic with DNAT in OUTPUT chain not working as expected
I am having a dumb, and I am hoping you lovely people can jumpstart my brain.
I am running a service in a local network namespace. The namespace looks like this:
# ip -n ns1 addr
1: lo: <LOOPBACK,...
- 36k
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388
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Root network namespace as transit between 2 other net namespaces
I am trying to communicate between two network namespaces that are connected through the root namespaces using veth pairs as seen in the diagram. I am unable to perform a ping from netns A to netns B. ...
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Pipewire sound card hijacked by netns
I sometimes run my browser in a VPN netns, like this:
sudo ip netns exec vpnns sudo -u myuser google-chrome &
This works great, except sometimes it seems that the netns "steals" the ...
- 228