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rtech91
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2 Messages

Saturday, August 31st, 2024 4:09 AM

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IPv6 but no IPv4

Comcast/Xfinity recently "performed maintenance in my area and upgraded equipment".  Ever since this happened any hardware attached to my Arris modem will only receive an IPv6 IP, the only IPv4 it receives is the self-assigned IP when DHCPv4 fails to get an IP.  This is with an Arris S33 modem.  I swapped to an Arris SB8200 and I got the same result.  I talked with two tech support people who could not help me.  The second one ultimately sent me to a supervisor who agreed to send a truck. 

How can I get this fixed?  I'm suspecting this issue is on Comcast's end as this happened the day they performed maintenance.

I've tried restarting the modems about a dozen times.  I've tried two different modems with the same results, neither gets an IPv4 address.  I'm plugging 2 different laptops directly in to the modems and neither receives an IPv4, they both are only getting IPv6.  These are an Arris S33 and SB8200 modem so there is nothing to configure on it as far as I know that is todo with IPv4 or IPv6.

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2 months ago

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XfinityThomasC

Official Employee

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1.9K Messages

2 months ago

Hello, @rtech91 was the supervisor able to set you up with a service appointment to get this issue resolved? What were the results of that visit and recommendation of the technician? 

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rtech91

2 Messages

@XfinityThomasC​ The appointment was cancelled.  Early Saturday morning I received a notification of an outage in the area.  I saw a Comcast truck parked in the same area I saw workers in the prior day and right around noon I received a follow-up notification that they had fixed an issue.  I restarted my modem and I started receiving IPv4 addresses and was back online.  I'm left with the impression that the techs the following day performing upgrades and installing new hardware must have misconfigured something.

2 months ago

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XfinityMartyR

Official Employee

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1.4K Messages

 

rtech91 Thanks for the update! I'm glad to hear everything is back to normal! 

 

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2 months ago

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