int main()
{
    std::ifstream file("address.txt");
    std::istreambuf_iterator<char> eos;
    std::istreambuf_iterator<char> iter(file);
    std::string needle = "8.0.4";

    std::istreambuf_iterator<char> iter2 = std::search(iter, eos, needle.begin(), needle.end());

    return 0;
}