NAT444 is fine | It's too complicated | Can't we just buy more IPv4 addresses? | Vendor bugs | It's on our roadmap |
We don't have a lab to test it | We would have to rewrite our entire application to support it | IPv6 isn't an Internet Standard yet | It's too hard to support | I don't want to lose the security provided by NAT |
There's no certification track | Our DDOS mitigation platform can't monitor IPv6 | Android doesn't support DHCPv6 | End users don't care about IPv6 | |
There's no ROI on deploying IPv6 | Our Lawful Intercept doesn't support IPv6 yet | It's not supported by Google Compute | Our recursive DNS can't handle the extra load | We have no roadmap for native IPv6 as we rolled out 6RD. |
Too many people have broken IPv6 stacks | IPv6 just isn't a priority | None of our customers want it | AWS doesn't support it | We can use RFC6598 |