> Dual stack has some incredibly stupid defaults. Dual stack is the problem, and it's not going away in the next 20 years. Single stack ipv4, fine, if your ap

> Dual stack has some incredibly stupid defaults. Dual stack is the problem, and it's not going away in the next 20 years. Single stack ipv4, fine, if your applications support it then great. Single stack ipv6, fine, if your applications support it then great. Dual stack is just horrendous, you can never be sure what stack you're on when you work at a higher level.