in6_addr has private fields

[dimbleby]

The private __align field makes it hard to construct an in6_addr.

[alexcrichton]

Yeah for now I'd create instances with mem::uninitialized or mem::zeroed (as you would in C) and then set the fields manually. Unfortunately without a way to specify a custom alignment I don't know of a way around this :(

The good news though is that if we gain the ability to do so the code will be backwards compatible for when the private field is removed!