| No one else has deployed it |
We've still got plenty of IPv4 |
NAT444 is fine |
None of our customers want it |
Hex is hard |
| We'll deploy IPv6 next financial year |
Larger headers are less efficient |
Android doesn't support DHCPv6 |
We have no roadmap for native IPv6 as we rolled out 6RD. |
It's not supported by Google Compute |
| It's too complicated |
Our recursive DNS can't handle the extra load |
 |
Can't we just buy more IPv4 addresses? |
Our Dynamic DNS doesn't support it |
| It'll break our GeoIP |
It's too hard to support |
We can use RFC6598 |
There's no ROI on deploying IPv6 |
We would have to rewrite our entire application to support it |
| Vendor bugs |
We have IPv6, but we just want to keep things simple |
Our vendor doesn't support it |
It's on our roadmap |
There's no certification track |
Made with excuses from