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by AceJohnny2 204 days ago
> Comcast pulled the ability to use IPv6 in this manner

Can you expand on this?

It's been a while since I've explored IPv6, but I'm on Comcast and I recently switched from OpenWRT to an Ubiquiti router and was surprised that 1) it doesn't enable IPv6 by default and 2) It asks for configuration [2] that I'm not sure how to answer. I thought everything "just worked" with Router Advertisement.

[2] https://help.ui.com/hc/en-us/articles/115005868927-UniFi-Gat...
1 comments
binkHN 204 days ago
In a nutshell, Comcast used to provide a /60 to residential customers and this could be subnetted into more than one LAN. Nowadays they only provide a single /64 and this can only be used for one subnet.
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ianburrell 204 days ago
It sounds like your router can request a larger prefix length than /64 and Comcast will give up to a /60. That requires a router that knows how to do that.

That seems like reasonable approach when most people just need /64, and those who want more have to configure to get it.

link
binkHN 204 days ago
Comcast USED to give up a /60 when requested; they now ignore the request and provide a /64.
link