| IPv6 addresses are too long to remember |
It's too hard to support |
None of our customers want it |
Our business intelligence team can't even parse IPv4 logfiles |
| No one else has deployed it |
Too many people have broken IPv6 stacks |
It's too complicated |
We forgot to include IPv6 in our last RFP |
| My transit provider doesn't support IPv6 |
We would have to rewrite our entire application to support it |
IPv6 is just a fad |
Our Dynamic DNS doesn't support it |
| I don't want to expose my MAC address |
We'll deploy IPv6 next financial year |
What do you mean I have to wrap an IP in square brackets? |
IPv6 is a security risk |
Made with excuses from 
IPv6 Excuse Bingo