What network equipment do you use inside your home? Ubiquity has driven me nuts with the poor IPv6 support. I expect the US consumer home network gear is in just as bad of shape. Trying to upgrade my Comcast modem to IPv6 gave me a device that hard crashed every 6 days to 1 month, that had to be replaced 6 times until they finally would give me the next model up to fix the problem properly.

Edit: This is for a business modem owned by Comcast, needed because of a static IP config.