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Mar 11 2014
By: Find_the_Door First Son 4 posts
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Packet Fragmentation following "maintenance"

25 replies 13388 views Edited Mar 11, 2014

Immediately after having to relogin today (following maintainece) I curiously ran a connection test (on PS4).  Everything went fine, but then on NAT type test it hung for quite sometime.  Then it proceeded to finsih the test as normal - then I immediately noticed that at the bottom it gave the "The router in use might not support IP packet fragmentation" error.  

Couple of things....

I own: 

 

1) Netgear Nighthawk

 

2) Motorola SB 6141 


Both hardwired through CAT6e (3 ft'rs to make sure cable runs are as short as can be)



I immediately started tinkering with my router (best consumer router available) as that's what the error  was blaming (router).  Then after no settings changed a **bleep** thing I proceeded to factory reset my router and rebuild my PS4's database.... all to no avail..... I tried setting up my internet connection via "easy" and "custom" to no success......

Then I said ___ it and competely removed the router from the equation.  Turned off the PS4 competely, rebooted my cable modem and re-ran the test............... ONLY TO GET THE SAME ERROR!!!!  

This never happened before today' - and it's irritating.

Anyone else experiencing this when they run a connection test?

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MVP Support
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Re: Packet Fragmentation following "maintenance"

Mar 11, 2014

welcome to the forums!

 

yep, this is one of the inherent "risks" of online gaming, or using anothers online service. this can happen when they do back-end server maintenance/changes. they might be trying to make the majoritys connection better, but it can cause others to have problems depending on your set-up.

 

this explains packet loss - http://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/25885-pmtud-ipfrag.ht...

 

and doing a google search for "the router in use might not support IP packet fragmentation" will bring up tons of articles on how to fix it, including a bunch of threads from this site.

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First Son
Registered: 06/01/2013
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Re: Packet Fragmentation following "maintenance"

Mar 11, 2014
Realized only thing I haven't done is DMZ it. DMZ'd this morning and is now working like a charm.

What the heck is the reason for this? I had virtually every firewall setting disabled.
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MVP Support
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Re: Packet Fragmentation following "maintenance"

Mar 11, 2014

Find_the_Door wrote:
Realized only thing I haven't done is DMZ it. DMZ'd this morning and is now working like a charm.

What the heck is the reason for this? I had virtually every firewall setting disabled.

no idea off the top of my head. like i said earlier, they can make changes on the backend that affect the front end, as in, us connecting well or not depending on our set-ups.

 

honestly, it's one of the hardest things to try to help people with, as soon as there is an issue, most people automatically blame the console or sony, when in reality, it's usually an issue with their own network or an issue with their ISP. comcast & at&t u-verse are notorious for causing connection problems.

 

usually it's the same line of "my network is great! all of my other devices, (which aren't playstations, on different networks) work fine"...and so on...

 

anyway, sorry i couldn't tell you the cause, but i'm glad you got it sorted!

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First Son
Registered: 11/20/2013
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Re: Packet Fragmentation following "maintenance"

Mar 11, 2014

Just for others who might come across this thread when trying to figure out the packet fragmentation error / warning...

 

I have my PS4 in a DMZ and still get the message after running an internet test. Other threads will show the same results so it doesn't appear that DMZ is the solution. 

 

The warning / error is basically stating that your router is sending information to the PS4 in larger packets than it is capable of handling. Alot of people have had success by changing the MTU settings (usually defaulted to 1500) to an optimal (lower) number. 

 

This error so far has had no effect on my multiplayer / party or any other psn experience. It also is not consistent (one day I get it, another day I dont). 

 

I haven't tried chaning any settings (on PS4 or router) - but may mess with the MTU value if it does become a problem. 

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First Son
Registered: 03/22/2015
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Re: Packet Fragmentation following "maintenance"

Mar 25, 2015

i turned off QoS setting for my asus rt-n66u router and the network packet frag warning went away on my ps4

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First Son
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Re: Packet Fragmentation following "maintenance"

[ Edited ]
Nov 14, 2015

Well, guess it's my turn to be unlucky...

 

After3.11 update rolled in on November 9, I started noticing that when I tested my internet connection (something I have a habit of doing almost all the time that I turn my playstation on) I noticed that from the usual 46Mb down and 11mb that I get, dropped  to 11mb down and 2mb up and a message at the bottom of my screen stating that my (router does not support IP packet fragmentation) 

now, the message isn't what is bothering me it is that my download and upload speeds are at a crawl, spoke to my internet provider and Sony but everything was fine on their end...

any suggestions?

thank you.

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Hekseville Citizen
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Re: Packet Fragmentation following "maintenance"

Nov 14, 2015
I'm having the same error. My ps4 is on DMZ and it started after the server refresh. It's very frustrating. I don't have port forwarding for my ps4 bc it's on a DMZ. Would forwarding help at all? Even though it's on a DMZ?

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First Son
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Re: Packet Fragmentation following "maintenance"

Nov 15, 2015

Getting the same error here too, las did the test 2 days ago (and similarly do it daily when playing) and never had this error and my network setup is unchanged.

 

Today getting the IP fragments error and playing with firewalls and MTU has made no difference - must be Sony's side

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First Son
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Re: Packet Fragmentation following "maintenance"

Nov 15, 2015
Having the same trouble after maintenance. Tried different routers, Asus and Netgear Nighthawk. Connected directly to ISP modem/router combo, all wired connections and ip fragmentation message still there. No change with DMZ. multiplayer with BO3 is ok but NAT type is moderate. MTU changing had no effect. Test internet connection always has the ip fragments message. Never happened before 3.11. Assuming it's on Sonys end. I've eliminated everything possible from my end. Nothing was changed in my network. Hopefully they correct it.
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