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user_cp92n
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Sunday, May 17th, 2026 4:52 PM

DHCP Lease Renewal too short

Hi all,

I frequently broadcast livestreams and/or participate in long video calls, and I deal with intermittent disconnects on regular short intervals (30 minutes, usually). After extensive troubleshooting, I have isolated the issue to unusually short DHCP lease renewals on Xfinity's end. 

I would like to get a longer DHCP lease from Xfinity (maybe 24 hours?) so that these micro-disconnects don't seem to happen as often. 

Similar issues from this forum: 
https://forums.xfinity.com/conversations/your-home-network/dhcp-lease-renewal-only-1h27m-every-time/6269f6c436b3dc41e2a6d455
https://forums.xfinity.com/conversations/your-home-network/at-the-end-of-every-month-my-wan-dhcp-lease-gets-reduced-to-2-hours/65640e7993c02b495090a0a2
https://forums.xfinity.com/conversations/your-home-network/very-short-wan-dhcp-leases-and-internet-disconnection-on-every-lease-renewal/63e1eea3b03aac5c8e4351a2

Does anyone know the right question / people to ask to get Xfinity to do this for me? All customer service scripts are just about troubleshooting my own equipment which is obviously not causing this issue. I have substituted in different modems and routers and even plugged a computer directly into a modem just to be sure, and, it has nothing to do with what equipment I have plugged in. The client does not control when DHCP WAN renewals happen, obviously.


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2 days ago

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XfinityThomasC

Official Employee

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3.4K Messages

12 days ago

Hello, @cpicone92 I did some digging for you and found this information on extending the DHCP lease:

 

To extend your DHCP lease, you typically need to manually release and renew your IP address. This can be done by following these steps:

For Windows 10/11:

  1. Open the Run box (Windows + R).
  2. Type CMD and press Enter.
  3. In Command Prompt, type ipconfig/release and press Enter.
  4. Then type ipconfig/renew and press Enter.
  5. Type Exit to close the window.

For Mac OS X:

  1. Close any open internet apps.
  2. Go to System Settings > Network.
  3. Select your connection type and click Details.
  4. Go to TCP/IP and click Renew DHCP Lease.

This process helps refresh your IP address and extend the lease.

 

For more details including Mac users see: https://www.xfinity.com/support/articles/releasing-and-renewing-ip-address

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user_cp92n

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@XfinityThomasC​ as the other poster said, this doesn't have anything to do with what I'm asking. I would like a longer DHCP lease *from my ISP*, as it appears to need to renew a few dozen times a day, leading to disconnected streams and work. 

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4 days ago

XfinityAlyssaA

Official Employee

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2.7K Messages

Thank you for confirming that you’re looking for a longer DHCP lease @cpicone92.

 

Regrettably, I think this may fall outside the support scope on this platform. However, we’d be happy to get a ticket submitted to see if our Advanced Repair Team may be able to assist further.

 

To get started, could you please send us a Direct Message with your name and the service address associated with the account? 

To send a "Direct Message" ("Private") message:

Click "Sign In" if necessary

  • Click the "Direct Message chat" icon
  • Click the "New message" (pencil and paper) icon
  • Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which 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
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2 days ago

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EG

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118.2K Messages

12 days ago

@XfinityThomasC 

That won't work.. They are referring to the WAN lease, not the LAN. Doing that on a computer / device that is connected to a stand-alone router or a combo modem / router gateway device will only serve to renew / change the LAN / private IP address that is assigned to a computer / device by the router's built-in DHCP server. It will not renew the WAN / public IP address that is assigned to the router by Comcast's system / DHCP server.

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