DNS has only partial support

[jprestwo]

DNS is missing lookup functionality. There is no implementation for: int uv_getnameinfo(uv_loop_t* loop, uv_getnameinfo_t* req, uv_getnameinfo_cb getnameinfo_cb, const struct sockaddr* addr, int flags)

[seanshpark]

Yes, including this function, there may be lots of missing compared to libuv.