| I don't want to lose the security provided by NAT |
IPv6 is a security risk |
NAT444 is fine |
Our DDOS mitigation platform can't monitor IPv6 |
| It'll make it easier for the government to track me |
Larger headers are less efficient |
Vendor bugs |
Github doesn't support IPv6 |
| It's too hard to support |
We don't need that many addresses |
IPv6 addresses are too long to remember |
What's IPv6? |
| We would have to rewrite our entire application to support it |
It's too complicated |
None of our customers want it |
We've still got plenty of IPv4 |
Made with excuses from 
IPv6 Excuse Bingo