template<class InternetProtocol>
bool operator==(const basic_resolver_results<InternetProtocol>& a,
const basic_resolver_results<InternetProtocol>& b);
Returns: a.size() == b.size() && equal(a.cbegin(), a.cend(), b.cbegin()).
template<class InternetProtocol>
bool operator!=(const basic_resolver_results<InternetProtocol>& a,
const basic_resolver_results<InternetProtocol>& b);
Returns: !(a == b).