| End users don't care about IPv6 |
Our recursive DNS can't handle the extra load |
It's too complicated |
Hex is hard |
| It's not supported by Google Compute |
We'll deploy IPv6 next financial year |
I don't want to expose my MAC address |
There's no certification track |
| IPv6 is just a fad |
What do you mean I have to wrap an IP in square brackets? |
We would have to rewrite our entire application to support it |
It's not mature enough |
| Github doesn't support IPv6 |
IPv6 isn't an Internet Standard yet |
Azure doesn't support it |
My transit provider doesn't support IPv6 |
Made with excuses from 
IPv6 Excuse Bingo