Ivan Pepelnjak from ipSpace.net comments:

Ed Horley, an awesome IPv6 geek I had the privilege to meet at NFD6, wrote an interesting blog post  arguing against IPv6 ULA usage  (particularly when combined with NPT66). We would all love to get rid of NAT, however …

Ivan takes a look at Ed Horley’s great ULA post and applies it to real mid-level networks.

Read more at:  To ULA or not to ULA, That’s the Question