Backport PR #22691 on branch 6.x (PR: Provide username, host and port…

… from hostname info in ssh tunnels) (#22749)

spyder/plugins/ipythonconsole/utils/client.py

@@ -102,14 +102,14 @@ def tunnel_to_kernel(
             )
         elif sshkey is not None:
             self.__tunnel_handler = KernelClientTunneler.new_connection(
-                tunnel=hostname,
                 password=password,
                 client_keys=[sshkey],
+                **self._split_shh_address(hostname),
             )
         else:
             self.__tunnel_handler = KernelClientTunneler.new_connection(
-                tunnel=hostname,
                 password=password,
+                **self._split_shh_address(hostname),
             )
 
         (
@@ -129,3 +129,14 @@ def tunnel_to_kernel(
             )
         )
         self.ip = "127.0.0.1"  # Tunneled to localhost
+
+    @staticmethod
+    def _split_shh_address(address):
+        """Split ssh address into host and port."""
+        user_host, _, port = address.partition(':')
+        user, _, host = user_host.rpartition('@')
+        return {
+            'username': user if user else None,
+            'host': host if host else None,
+            'port': int(port) if port else None
+        }