Skip to main content

  • Home

  • Getting Started

    • Offers

U
user_f001be
1st Topic
1st Reply

Visitor

 • 

3 Messages

Thursday, May 23rd, 2024 2:30 PM

Closed

Invalid MTU 9192

Same as a previous user almost a year ago.

Comcast "upgraded" my area several times over the last few months and then reprovisioned my modem last night about 6PM.  Since then, my IAX VOIP packets are not working and I am getting "Invalid MTU 9192" errors on the Comcast port of my router.    I'm pretty sure it has to do with the reprovision.    

I do not see and "direct message"  or "peer to peer" selections on this page as referenced in the earlier messages, and I doubt that I will get anyone who knows how to fix this issue if I call support.

How do I reach someone qualified to address this>

Question

 • 

Updated 

3 months ago

121

3

0

Was this helpful?

user_x8ttx1

2 Messages

6 months ago

My router logs are flooded by mtu 9192 error. 
I think it has something to do with jumbo frames.

no clue who to call to stop it 

0

0

user_f001be

Visitor

 • 

3 Messages

6 months ago

I did call support and got a pretty good agent. She tried and tried and could not find a way to escalate this to the network engineering team.   She asked her supervisor who did not know either, but was going to research how to do this.  The issue is clearly with the upstream network and nothing local to me.

5

0

user_x8ttx1

2 Messages

I disabled ipv6 on my mikrotik router and no longer logging invalid MTUs

6 months ago

0

user_f001be

Visitor

 • 

3 Messages

Yes, but that just hides the problem. The problem is they're misconfigured network.

6 months ago

0

XfinityRoberto

Official Employee

 • 

1.5K Messages

Hi there @user_f001be, I am sorry to hear you are having troubles with your service. You are in the right place and we are happy to assist you today. Please send us a direct chat message with your full name and complete service address to “Xfinity Support”. To do so, click on the chat icon located at the top right of this forums page.

Here's the detailed steps to direct message us:

  • Click "Sign In" if necessary
  • Click the "Direct Message” icon (upper right corner of this page)
  • Click the "New message" (pencil and paper) icon
  • Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
  • Type your message in the text area near the bottom of the window
  • Press Enter to send your message

 

Let me know if you have any questions.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

6 months ago

0

user_i8rxuv

1 Message

So,  why problem still   persist,  XfinityRoberto? It really  misconfigured network   from your engineers   team.  Any  plans to  fix it?

4 months ago

0

XfinityMarcos

Official Employee

 • 

1.9K Messages

Hey there user_i8rxuv, thank you for visiting our Forum. I'd love a chance to work with you. Can you please provide a bit more background and details regarding the issue you're seeing? 

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

4 months ago

0

train_wreck

Contributor

 • 

35 Messages

3 months ago

Having the same problem, was there ever a fix?

1

0

XfinityChristy

Official Employee

 • 

1.6K Messages

 

train_wreck We’re really sorry to hear about the issues you’re experiencing with your IPv6 connectivity—that sounds frustrating, especially given the sudden behavior change. It’s concerning that you are getting this error, and we appreciate you bringing this to our attention. You shouldn’t have to manually reconfigure your router to handle this. Could you please send us a direct message with your full name and address along with more details about your setup? We’d like to investigate this further. Your feedback is important to us, and we want to help resolve this as quickly as possible. 

 

To send a "Direct Message" message:

Click "Sign In" if necessary

Click the "Direct Messaging" icon at the top of the page (looks like a text bubble)

Click the "New message" (pencil and paper) icon

Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list that appears. The "Xfinity Support" graphic replaces the "To:" line

Type your message in the text area near the bottom of the window

Press Enter to send it

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

3 months ago

0

forum icon

New to the Community?

Start Here