IPv6 isn't an Internet Standard yet | There's no ROI on deploying IPv6 | Our Dynamic DNS doesn't support it | It's on our roadmap | AWS doesn't support it |
We have IPv6, but we just want to keep things simple | We'll deploy IPv6 right after we deploy DNSSEC | We forgot to include IPv6 in our last RFP | IPv6 is just a fad | There's no certification track |
End users don't care about IPv6 | What's IPv6? | We don't have a lab to test it | Our recursive DNS can't handle the extra load | |
NAT444 is fine | My transit provider doesn't support IPv6 | It's too hard to support | We can use RFC6598 | It's not supported by Google Compute |
Github doesn't support IPv6 | IPv6 is a security risk | IPv6 is slower than IPv4 | We've still got plenty of IPv4 | Vendor bugs |