| Denial-of-Service, Address Ownership, and Early Authentication in the IPv6 World Recent countries visiting this post |  |
 | 2 | United States |
 | 1 | China |
 | 1 |
| Denial-of-Service, Address Ownership, and Early Authentication in the IPv6 World Recent countries visiting this post | |
| 2 | United States |
| 1 | China |
| 1 |