Connectivity
Connectivity and managing Your Comcast Business network
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Occasional Visitor

IPv6 over IPv4 (6in4) seems to be blocked

Hi!

I've been using IPv6-over-IPv4 tunnel with Comcast Bussiness for a while without any problems.

Starting this Firday (Jul 24th, around 5am) all tunnel traffic (proto 41) seems to be blocked somewhere at Comcast or Comcast provided modem (CGA4131). Modem is in pass-thriough mode (all firewalling should be disabled according to the modem web UI). I suspect modem fw was updated and something got broken.

 

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7 REPLIES 7
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Official Employee

Re: IPv6 over IPv4 (6in4) seems to be blocked

Hello, how are you? I hope overall your weekend is going well. I apologize you are having trouble with IPv4 over IPv6. I know this must be causing an inconvenience. Are you able to send a private message with your name, service address, and account number (or phone number) so I can assist? I need to make sure your modem is online, and all your Comcast Business services are working properly.

 

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Occasional Visitor

Re: IPv6 over IPv4 (6in4) seems to be blocked

I see today things are working again.

Modem firmware seems to have been reverted to CGA4131COM_3.12p14s3_PROD_sey, non working fw was CGA4131COM_4.2p3s4_PROD_sey

 

I'd like Comcast Bussiness to comment on what is going on and what is being done to prevent this from happening in the future - my service was affected for more than a week.

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Official Employee

Re: IPv6 over IPv4 (6in4) seems to be blocked

I will be more than happy to take a closer look at your account and equipment to see what I can discover. I am glad to hear you are no longer experiencing trouble. Firmware is always going to be automatically assigned to your modem. Are you able to send a private message with your account information so I can do all I can to help? 

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Occasional Visitor

Re: IPv6 over IPv4 (6in4) seems to be blocked

I alerady sent you my account info in PM when you asked for it a week ago.

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Official Employee

Re: IPv6 over IPv4 (6in4) seems to be blocked

I apologize, I don't see a private message. Did you send it from this same profile? If you can send over another one, I can take the next steps to help. 

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Occasional Visitor

Re: IPv6 over IPv4 (6in4) seems to be blocked

Just sent another one

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Occasional Visitor

Re: IPv6 over IPv4 (6in4) seems to be blocked

Now I'm getting "You have reached the limit for number of private messages that you can send for now. Please try again later." when trying to reply to youR PM.

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