binding member functions in a variadic fashion

I have a member function with a variable number of parameters, stored in a std::function, and I want to bind the instance and get an independent function object.

template <class T, class R, class... Args>
void connect(const T& t, std::function<R(const T&, Args...)> f) {
  std::function<R(Args...)> = /* bind the instance c into the function? */
}

// ...

Class c;
connect(c, &Class::foo);

For a fixed number of arguments I'd use std::bind, but I don't see how to do this for variadic parameters.