[vlan0]

Maybe the smaller ISPs.

Many large cable ISPs in the USA have been running IPv6 internally for years now. They likely have some of the largest deployments if you account for all their IP managed gear.

Of course, these are the same ISPs that already provide a dual-stack gateway to their customers.

[snuxoll]

> Many large cable ISPs in the USA have been running IPv6 internally for years now.

CableOne/Sparklight says hi, because they have zero intention on deploying v6 for the foreseeable future.

[tssva]

Not sure I would classify CableOne/Sparklight as a large cable ISP. Their website says they service about 900k customers. Even if all of these customers had internet service this would put them fairly far down the list of ISPs. I would more classify them as a medium sized ISP.