Mininet.delController() fails when removing a RemoteController

Bug description

Calling Mininet.delController() with a RemoteController instance results in a TypeError.

The error occurs because delController() internally calls delNode(), which invokes node.stop(deleteIntfs=True). However, RemoteController.stop() does not accept the deleteIntfs argument.

Minimal reproduction

from mininet.net import Mininet
from mininet.node import RemoteController

net = Mininet(controller=RemoteController)

c0 = net.addController(
    name='c0',
    controller=RemoteController,
    ip='127.0.0.1',
    port=6653
)

net.delController(c0)

Expected behavior

Mininet.delController() should either successfully remove a RemoteController instance or clearly indicate that removing remote controllers is unsupported.

Actual behavior

The following exception is raised:

TypeError: RemoteController.stop() got an unexpected keyword argument 'deleteIntfs'

Relevant code path

mininet/net.py:

def delController(self, controller):
    self.delNode(controller)

delNode():

node.stop(deleteIntfs=True)

RemoteController.stop() does not accept the deleteIntfs argument.

Environment

• Mininet version: 2.3.0
• OS: Ubuntu 24.04.4 LTS
• Python version: Not Python-version specific (tested with 3.12.3)
• Installation method: Installed using apt (sudo apt install mininet)

Additional context

RemoteController instances can be created through addController() and are stored in Mininet.controllers. However, calling delController() on such an instance currently results in a TypeError because the cleanup path passes deleteIntfs=True to RemoteController.stop().

Traceback

Traceback (most recent call last):
  File "/home/akash4-sys/Desktop/Project/fuzzer/sample.py", line 13, in <module>
    net.delController(c0)
  File "/usr/lib/python3/dist-packages/mininet/net.py", line 302, in delController
    self.delNode( controller )
  File "/usr/lib/python3/dist-packages/mininet/net.py", line 246, in delNode
    node.stop( deleteIntfs=True )
TypeError: RemoteController.stop() got an unexpected keyword argument 'deleteIntfs'