| Those stupid Privacy Extension addresses keep changing |
Our business intelligence team can't even parse IPv4 logfiles |
Vendor bugs |
Github doesn't support IPv6 |
| IPv6 just isn't a priority |
We forgot to include IPv6 in our last RFP |
Our Lawful Intercept doesn't support IPv6 yet |
Too many people have broken IPv6 stacks |
| IPv6 isn't an Internet Standard yet |
It'll break our GeoIP |
We've still got plenty of IPv4 |
My transit provider doesn't support IPv6 |
| We'll deploy IPv6 right after we deploy DNSSEC |
We'll deploy IPv6 next financial year |
Can't we just buy more IPv4 addresses? |
End users don't care about IPv6 |
Made with excuses from 
IPv6 Excuse Bingo