| IPv6 is just a fad |
Our recursive DNS can't handle the extra load |
We've still got plenty of IPv4 |
It's not supported by Google Compute |
| Too many people have broken IPv6 stacks |
It's on our roadmap |
IPv6 isn't an Internet Standard yet |
We forgot to include IPv6 in our last RFP |
| None of our customers want it |
I don't want to lose the security provided by NAT |
End users don't care about IPv6 |
We would have to rewrite our entire application to support it |
| Github doesn't support IPv6 |
Vendor bugs |
IPv6 is a security risk |
We'll deploy IPv6 next financial year |
Made with excuses from 
IPv6 Excuse Bingo