for _, tc := range testCases {
		if tc.expect != IPNetEqual(tc.ipnet1, tc.ipnet2) {
			t.Errorf("Expect equality of %s and %s be to %v", tc.ipnet1.String(), tc.ipnet2.String(), tc.expect)
		}
	}
}

func TestIsConnectionRefused(t *testing.T) {
	testCases := []struct {
		err    error
		expect bool
	}{
		{
			&url.Error{Err: &net.OpError{Err: syscall.ECONNRESET}},
			false,
		},
		{