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IPV6 - Prefix Delegation Size
Hello,
I'm setting up IPV6 for my home network and by default, Comcast is assigning a 64-bit prefix delegation size, which allows only 1 subnet. I have multiple subnets at home and I want to add support for IPV6. According to the last post to this thread, it stated that Comcast no longer accepts hint for /60 prefixes. I'm a residential internet customer, how do I get more than 1 subnet when using Comcast?
https://forums.xfinity.com/t5/Your-Home-Network/Issues-getting-an-IPv6-Address/m-p/3331986#
Thank you
ctminime
Regular Visitor
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7 Messages
4 years ago
I need a bigger prefix too. I have 5 different VLANs/subnets. So far I haven't been able to reach any human being at Comcast to help me out or confirm that we can no longer get a /60. I found this post on reddit that suggests restting your DUID. I haven't had a chance to test this yet but if you are running pfSense, I think you just change the DUID mode or modify the raw DUID.
https://www.reddit.com/r/ipv6/comments/3cb6n5/comcast_all_residential_ipv6_delegations_are/
If this works I will post back.
Oddly, I was able to request a /63 successfully giving me 2 delegations, but that doesn't get me IPv6 in my entire network.
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