# Network setup in Rancher when a container is created

**URL:** <https://forums.suse.com/t/network-setup-in-rancher-when-a-container-is-created/6348>\
**Category:** Rancher 1.x\
**Created:** [May 10, 2017, 11:14am UTC](https://forums.suse.com/t/network-setup-in-rancher-when-a-container-is-created/6348 "2017-05-10T11:14:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![devlaptop](https://avatars.discourse-cdn.com/v4/letter/d/49beb7/32.png) [@devlaptop](https://forums.suse.com/u/devlaptop)\
**Post date:** [May 10, 2017, 11:14am UTC](https://forums.suse.com/t/network-setup-in-rancher-when-a-container-is-created/6348/1 "2017-05-10T11:14:11Z")

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Hi All,

I am new to Rancher (and docker as well) and would like some help in understanding how Rancher interacts with a container to setup networking.

From what I can tell, Rancher use CNI rather than Dockers CNM, so after a container is setup, it uses a plugin to create host & container network interfaces by interacting with the host + containers network namespace using low level sys calls.

However, does this mean that when a container is created by the Rancher agent, does it tell docker to create a container with network=none ?

I ask this because there is no docker0 network interface in the containers created by Rancher.

I guess my question is, are these the steps that occur ?

```
 1. Rancher agent launches a container using docker with no networking
 2. Rancher executes a CNI plugin with whatever networking is setup in the environ template (ipsec for example)

```

Thanks  
Shahed