| NAT444 is fine |
Our Lawful Intercept doesn't support IPv6 yet |
Too many people have broken IPv6 stacks |
Our business intelligence team can't even parse IPv4 logfiles |
| IPv6 isn't an Internet Standard yet |
IPv6 just isn't a priority |
Our DDOS mitigation platform can't monitor IPv6 |
We would have to rewrite our entire application to support it |
| It's too hard to support |
Our recursive DNS can't handle the extra load |
Azure doesn't support it |
No one else has deployed it |
| We'll deploy IPv6 right after we deploy DNSSEC |
We don't have a lab to test it |
I don't want to expose my MAC address |
There's no certification track |
Made with excuses from 
IPv6 Excuse Bingo