IPv6 Excuse Bingo| Vendor bugs | IPv6 addresses are too long to remember | None of our customers want it | We can use RFC6598 | It's too complicated |
| It's too hard to support | Our Lawful Intercept doesn't support IPv6 yet | Too many people have broken IPv6 stacks | Our recursive DNS can't handle the extra load | Github doesn't support IPv6 |
| I don't want to lose the security provided by NAT | It's not supported by Google Compute | |
Our Dynamic DNS doesn't support it | Our DDOS mitigation platform can't monitor IPv6 |
| IPv6 is just a fad | IPv6 isn't supported by OVH Cloud | Azure doesn't support it | Those stupid Privacy Extension addresses keep changing | Android doesn't support DHCPv6 |
| Larger headers are less efficient | No one else has deployed it | We forgot to include IPv6 in our last RFP | AWS doesn't support it | My transit provider doesn't support IPv6 |