IPv6 Excuse Bingo| Did you mean IPTV? | No one else has deployed it | Github doesn't support IPv6 | IPv6 just isn't a priority |
| Vendor bugs | IPv6 is just a fad | It'll break our GeoIP | Our Dynamic DNS doesn't support it |
| I don't want to expose my MAC address | We don't need that many addresses | Our vendor doesn't support it | IPv6 is a security risk |
| I don't want to lose the security provided by NAT | It's too hard to support | It's not mature enough | My transit provider doesn't support IPv6 |