New Poster
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3 Messages
Comcast Only giving me an IPv6 address, but it seems like my router needs IPv4
Last afternoon (around 4:00 PM PST) my router unexpectedly stopped being able to communicate with my modem (see picture of router ui: https://imgur.com/a/OVzwZu5)
But from my desktop, I'm able to connect to both my router and my modem without issue and can connect to the internet if I plug my desktop directly into the modem.
I think what happened is xfinity stopped giving me an ipv4 address, only an ipv6, and my router (wise tiger brand) doesn't work with ipv6 WAN addresses.
I'm not really a networking person so I'm not sure if I'm on the right track, but has anyone else experienced an issue like this before?
Anyone know how to request comcast to give an ipv4 address? I tried their customer support, but they didn't seem to know what I was talking about when I asked for an ipv4 address (maybe I don't know what I'm talking about).
Would rather not buy a new router since this one served me well for 2 years, but it seems like the only other step if I can't get this straightened out.
Accepted Solution
EG
Expert
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106.3K Messages
4 years ago
Have you tried power-cycling / re-booting the modem for 30 seconds with the router attached to it and powered on ?
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EG
Expert
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106.3K Messages
4 years ago
AFAIK, they are still assigning a dual stack configuration of IP addresses (both IPv4 and IPv6). Can you look into your router's WAN configuration settings / properties and see exactly what IP addy's are being assigned to the WAN interface ?
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needipv4
New Poster
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3 Messages
4 years ago
Yeah. I tried that a few times. Power cycled the modem and router separately as well as together. I think my router just doesn't support ipv6 so there is not much I can do besides getting xfinity to give me an ipv4 address or getting a new router.
Edit: Sorry EG for my initial response. I got frustrated hearing Comcast's automated robot telling me to power cycle my devices a million times that I didn't read your instructions carefully. Just read your answer again. That seemed to work! Thank you!
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needipv4
New Poster
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3 Messages
4 years ago
Hmm. Now that I think about it. It is a little strange that it's working now even after I power cycled everything like ten times. Maybe it was the modem trying to only use the ipv6 address, not realizing that it was connected to a router that only supports ipv4 and I just needed to power cycle the modem while it was connected to the router without power cycling the router (like you suggested). Maybe that's the one setup I didn't try to power cycle. Would that make sense? Well, I don't know what I'm talking about haha.
Thanks for your help! Hopefully xfinity doesn't actually remove ipv4 any time soon.
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EG
Expert
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106.3K Messages
4 years ago
Oh, o/k. Then disregard my latest reply. Glad you got it sorted out !
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EG
Expert
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106.3K Messages
4 years ago
Quite welcome !
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monkeyjumps
Visitor
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1 Message
3 years ago
It seems xfinity gateway doesn’t assign IPv4 sometimes and my WiFi adapter showing unidentifiable network/public network even I am in a private network (sometime correctly identified as WiFi name and private network). In this event, the internet is it working or only first page by search engines - google, bing…
I manually assign IPv4, then the internet connection is fine. I guess either IPv4 or IPv6 should work but the gateway couldn’t completely handle IPv6. It should assign IPv4 in my experience.
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EG
Expert
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106.3K Messages
3 years ago
@monkeyjumps
Please create a new topic of your own here on this board detailing your issue (copy your post and paste it there). Thanks. Re-closing this 10 nonth old dead thread that was improperly re-opened by the new forum software / platform. A known issue that is being worked on.
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