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Thursday, September 18th, 2025

Persistent IPv4 Provisioning Failure (IPv6 Only) After Multiple Resets

Hello,
I am experiencing a persistent issue where my Xfinity modem is only being provisioned with an IPv6 address, and is not receiving an IPv4 address. I have confirmed this by checking the modem's status page, which shows a valid IPv6 lease but no IPv4 WAN information.
Troubleshooting Steps Taken:
  • Customer-side:
    • Completed multiple full power cycles of the modem (unplugged for >60 seconds).
    • Restarted the network equipment in the correct order (modem first, then router).
    • Enabled IPv6 on my eero router, but the problem persists because the modem is not receiving an IPv4 address from the Xfinity network.
    • I am aware that "Honor MDD" in the modem log is a standard message and not the source of the problem.
  • Xfinity Support Actions:
    • I have contacted Xfinity support multiple times.
    • The most recent support agent performed a "full reset," removing my modem from my account and re-provisioning it.
    • Even after this full reset and a subsequent power cycle, the modem's status page still shows "IPv6 only."
Summary of the Problem:
  • Basic remote troubleshooting has been exhausted.
  • The issue is not with my modem or local network, as it's a provisioning failure on Xfinity's end.
  • Multiple re-provisioning attempts have failed, suggesting a deeper problem with the configuration file or the local network node serving my home.
Request:
  • I am requesting assistance from Tier 2/advanced technical support.
  • Please open a ticket to investigate potential configuration issues at the network node level.
  • If necessary, schedule a technician (truck roll) to inspect the physical line and signal quality.
Thank you for your time and help in resolving this matter.
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