Mikrotik free version ssh login fix (with minor updates) (#3458)

Co-authored-by: meganerd <[email protected]>

netmiko/mikrotik/mikrotik_ssh.py

@@ -21,11 +21,25 @@ def __init__(self, **kwargs: Any) -> None:
         return super().__init__(**kwargs)
 
     def special_login_handler(self, delay_factor: float = 1.0) -> None:
-        # Mikrotik might prompt to read software licenses before displaying the initial prompt.
+        """Handles special case scenarios for logins that might be encountered.
+
+        Special cases:
+        Mikrotik might prompt to read software licenses before displaying the initial prompt.
+        Mikrotik might also prompt for acknowledging no software key message if unlicensed.
+        """
+        no_license_message = 'Please press "Enter" to continue!'
         license_prompt = "Do you want to see the software license"
-        combined_pattern = rf"(?:{self.prompt_pattern}|{license_prompt})"
+        combined_pattern = (
+            rf"(?:{self.prompt_pattern}|{no_license_message}|{license_prompt})"
+        )
+
         data = self.read_until_pattern(pattern=combined_pattern, re_flags=re.I)
-        if license_prompt in data:
+        if no_license_message in data:
+            # Handle "no license" message
+            self.write_channel(self.RETURN)
+            self.read_until_pattern(pattern=self.prompt_pattern)
+        elif license_prompt in data:
+            # Handle software license prompt
             self.write_channel("n")
             self.read_until_pattern(pattern=self.prompt_pattern)