# PoE breaks networking?

**URL:** <https://forums.suse.com/t/poe-breaks-networking/29817>\
**Category:** SLES for Raspberry Pi\
**Created:** [May 19, 2017, 5:33pm UTC](https://forums.suse.com/t/poe-breaks-networking/29817 "2017-05-19T17:33:16Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![TheSpam](https://avatars.discourse-cdn.com/v4/letter/t/ed655f/32.png) [@TheSpam](https://forums.suse.com/u/TheSpam)\
**Post date:** [May 19, 2017, 5:33pm UTC](https://forums.suse.com/t/poe-breaks-networking/29817/1 "2017-05-19T17:33:16Z")

</div>

Just wondering if anyone else has not been able to get DHCP when connected to a PoE switch, I did not have this issue with Raspbian.

---

<div class="post-metadata">

**Author:** ![TheSpam](https://avatars.discourse-cdn.com/v4/letter/t/ed655f/32.png) [@TheSpam](https://forums.suse.com/u/TheSpam)\
**Post date:** [May 20, 2017, 1:39am UTC](https://forums.suse.com/t/poe-breaks-networking/29817/2 "2017-05-20T01:39:06Z")

</div>

> [@TheSpam;37916](#):
>
> Just wondering if anyone else has not been able to get DHCP when connected to a PoE switch, I did not have this issue with Raspbian.

![](http://i.imgur.com/QI1lTHT.png)  
Ignore the usb 1-1 as that is just me unplugging my mouse.

---

<div class="post-metadata">

**Author:** ![malcolmlewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/malcolmlewis/32/11375_2.png) [@malcolmlewis](https://forums.suse.com/u/malcolmlewis)\
**Post date:** [May 20, 2017, 2:30am UTC](https://forums.suse.com/t/poe-breaks-networking/29817/3 "2017-05-20T02:30:46Z")

</div>

> [@](#):
>
> On Fri 19 May 2017 10:44:01 PM CDT, TheSpam wrote:
> 
> TheSpam;37916 Wrote:[color=blue]
> 
> > Just wondering if anyone else has not been able to get DHCP when  
> > connected to a PoE switch, I did not have this issue with Raspbian.[/color]  
> > [image: [http://i.imgur.com/QI1lTHT.png]](http://i.imgur.com/QI1lTHT.png)  
> > Ignore the usb 1-1 as that is just me unplugging my mouse.

Hi  
So your powering the RPI via a PoE splitter? Normally when funky things  
happen check the power supply…

–  
Cheers Malcolm Â°Â¿Â° SUSE Knowledge Partner (Linux Counter #276890)  
openSUSE Leap 42.2|GNOME 3.20.2|4.4.62-18.6-default  
If you find this post helpful and are logged into the web interface,  
please show your appreciation and click on the star below… Thanks!

---

<div class="post-metadata">

**Author:** ![TheSpam](https://avatars.discourse-cdn.com/v4/letter/t/ed655f/32.png) [@TheSpam](https://forums.suse.com/u/TheSpam)\
**Post date:** [May 20, 2017, 3:14am UTC](https://forums.suse.com/t/poe-breaks-networking/29817/4 "2017-05-20T03:14:07Z")

</div>

No just plugging into a PoE switch, I have a hub between it and it works. There must be a kernel bug in 4.4 or a setting somewhere that I’m unaware of.

---

<div class="post-metadata">

**Author:** ![malcolmlewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/malcolmlewis/32/11375_2.png) [@malcolmlewis](https://forums.suse.com/u/malcolmlewis)\
**Post date:** [May 20, 2017, 7:17pm UTC](https://forums.suse.com/t/poe-breaks-networking/29817/5 "2017-05-20T19:17:49Z")

</div>

> [@](#):
>
> On Sat 20 May 2017 12:24:02 AM CDT, TheSpam wrote:
> 
> No just plugging into a PoE switch, I have a hub between it and it  
> works. There must be a kernel bug in 4.4 or a setting somewhere that I’m  
> unaware of.

Hi  
So your using wicked for dhcp? Is it ipv4 or ipv6? I use static ip’s  
and no ipv6 (disable via YaST network settings)

–  
Cheers Malcolm Â°Â¿Â° SUSE Knowledge Partner (Linux Counter #276890)  
openSUSE Leap 42.2|GNOME 3.20.2|4.4.62-18.6-default  
If you find this post helpful and are logged into the web interface,  
please show your appreciation and click on the star below… Thanks!

---

<div class="post-metadata">

**Author:** ![dsoothill](https://avatars.discourse-cdn.com/v4/letter/d/5f9b8f/32.png) [@dsoothill](https://forums.suse.com/u/dsoothill)\
**Post date:** [May 21, 2017, 6:55am UTC](https://forums.suse.com/t/poe-breaks-networking/29817/6 "2017-05-21T06:55:22Z")

</div>

> [@TheSpam;37916](#):
>
> Just wondering if anyone else has not been able to get DHCP when connected to a PoE switch, I did not have this issue with Raspbian.

I have around 10 of them all connected to a POE switch with no problems.

So first suggestion I have is have you tried turning POE off on the port in question to see if that fixes things?

What type of switch is it and what POE standard does it implement?
