int ReadUsers() { return 0; }
virtual size_t Count() const { return 0; };
int FindByIPIdx(uint32_t /*ip*/, USER_PTR * /*user*/) const
{ return -1; }
bool IsIPInIndex(uint32_t /*ip*/) const { return false; }
int ReadUsers() { return 0; }
virtual size_t Count() const { return 0; };
int FindByIPIdx(uint32_t /*ip*/, USER_PTR * /*user*/) const
{ return -1; }
bool IsIPInIndex(uint32_t /*ip*/) const { return false; }