May 2012 Archives
Facebook got some attention recently for turning on IPv6 on facebook.com. Unfortunately, they didn't enable it on their CDN, so Facebook is useless over an IPv6-only connection.
By contrast, Google+ works just fine. I did a side-by-side comparison earlier today on a v6-only VM (on a network that's in Google's IPv6 whitelist). G+, on the right, shows everything. FB shows an empty white box. I've been really impressed with Google's multi-year investment in IPv6. It's really paying off.
- Raw packet support
- OS detection
- Neighbor Discovery ping
- New IPv6 detection techniques (including some neat tricks with MLD and SLAAC).