IPv4 not working after COMCAST update

Received text about COMCAST upgrade and then internet traffic was intermittent afterwards. Isolated problem to IPv4 addresses not being routed or handled correctly, but ipV6 does. IPv4 pings time out, tracert times out at router by v6 pings/tracert works just fine. Some websites and apps on devices work like big name websites, but others do not. Must be because of ipV6 still working.

Have seen several posts about same issue over the past couple years but don’t see ultimate resolution other than to contact Xfinity Support… so trying that here. If anyone has a fix that I can do on the router (model XB3), then let me know. I have already tried techniques from previous posts without success.

Thanks!

Responses

U

user_owcso2

2 Messages

1 year ago

So Comcast responded quickly with an on site technician and the problem was resolved. The technician could not speak to the ip4 vs ipv6 issue, but he did replace the router/modem with a different model device (a better one). He also repaired cables and connectors outside.

In sum, no clear reason or solution for the original problem. The good old solution of replace everything is the best recommendation I can offer to anyone who sees this post.

2

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XfinityPaula

Official Employee

•

1.4K Messages

@user_owcso2 I'm sorry to hear of the trouble you were having with the connections, but happy to hear that the technician was able to help out. Typically, the devices and connections are checked first and from there the network would be examined. With the devices being replaced seemingly repairing the issue we would suspect that was the source of the issue. Considering it's only been a couple of days I would like to follow up with you in another few days to make sure that we have the issue completely cleared. If not we will work with our repair teams again to have everything corrected.

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1 year ago

0

XfinityOrlandoM

Official Employee

•

2K Messages

@user_owcso2 How is everything been workin?

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

1 year ago

0

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user_owcso2

IPv4 not working after COMCAST update

user_owcso2

XfinityPaula

XfinityOrlandoM

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