# Network Agent fails to start

**URL:** <https://forums.suse.com/t/network-agent-fails-to-start/774>\
**Category:** Rancher 1.x\
**Created:** [October 26, 2015, 9:12am UTC](https://forums.suse.com/t/network-agent-fails-to-start/774 "2015-10-26T09:12:35Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![skaggmannen](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/skaggmannen/32/410_2.png) [@skaggmannen](https://forums.suse.com/u/skaggmannen)\
**Post date:** [October 26, 2015, 9:12am UTC](https://forums.suse.com/t/network-agent-fails-to-start/774/1 "2015-10-26T09:12:36Z")

</div>

Hi!

I’ve been trying to get Rancher to work by following the quick start in the documentation. When I try to start my first container however the Network Agent container fails to start.

It shows the following error message in the UI:

```
: cbfc4bdd-5d60-4483-b8ee-21974926e2f8 : 500 Server Error: Internal Server Error ("Cannot start container 01c2e78071839e1238ff64000e206e0ad6e7458136eac0f696d4cfca31646aa5: Error starting userland proxy: listen udp 0.0.0.0:4500: bind: address already in use")

```

If I try to do a `netstat -p` to find if another process is using port 4500 I come up empty.

Any ideas?

**EDIT:**  
Nevermind, I didn’t use the correct syntax for `netstat`. I should’ve used `sudo netstat -nap`.

I apparently already had an IPSec service running on my host. Stopping it made the error disappear.

---

<div class="post-metadata">

**Author:** ![denise](https://avatars.discourse-cdn.com/v4/letter/d/82dd89/32.png) [@denise](https://forums.suse.com/u/denise)\
**Post date:** [October 26, 2015, 4:38pm UTC](https://forums.suse.com/t/network-agent-fails-to-start/774/2 "2015-10-26T16:38:22Z")

</div>

Closed on October 26, 2015, 4:38pm UTC