| We would have to rewrite our entire application to support it |
IPv6 just isn't a priority |
We don't have a lab to test it |
It's not mature enough |
| What do you mean I have to wrap an IP in square brackets? |
We'll deploy IPv6 right after we deploy DNSSEC |
Our recursive DNS can't handle the extra load |
Azure doesn't support it |
| Our vendor doesn't support it |
We'll deploy IPv6 next financial year |
IPv6 is slower than IPv4 |
It's too complicated |
| Can't we just buy more IPv4 addresses? |
We've still got plenty of IPv4 |
IPv6 addresses are too long to remember |
IPv6 isn't supported by OVH Cloud |
Made with excuses from 
IPv6 Excuse Bingo