I highly recommend the Cisco material. I learned IPv4 from blog posts written by people who read other blog posts and HOWTOs. It worked because I came along w

I highly recommend the Cisco material. I learned IPv4 from blog posts written by people who read other blog posts and HOWTOs. It worked because I came along when everyone had (and needed) the experience. IPv6 is harder because it’s the upgrade path, not a necessity. For that, I needed good professional source material. As do you: treat yourself!