diff --git a/gns3server/modules/dynamips/__init__.py b/gns3server/modules/dynamips/__init__.py
index 7de7a755..50ed4522 100644
--- a/gns3server/modules/dynamips/__init__.py
+++ b/gns3server/modules/dynamips/__init__.py
@@ -52,8 +52,6 @@ from .nios.nio_vde import NIOVDE
 from .nios.nio_tap import NIOTAP
 from .nios.nio_generic_ethernet import NIOGenericEthernet
 from .nios.nio_linux_ethernet import NIOLinuxEthernet
-from .nios.nio_fifo import NIOFIFO
-from .nios.nio_mcast import NIOMcast
 from .nios.nio_null import NIONull
 
 # Adapters
diff --git a/gns3server/modules/dynamips/nios/nio_fifo.py b/gns3server/modules/dynamips/nios/nio_fifo.py
deleted file mode 100644
index 9e7695a2..00000000
--- a/gns3server/modules/dynamips/nios/nio_fifo.py
+++ /dev/null
@@ -1,65 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright (C) 2013 GNS3 Technologies Inc.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-"""
-Interface for FIFO NIOs.
-"""
-
-import asyncio
-import uuid
-from .nio import NIO
-
-import logging
-log = logging.getLogger(__name__)
-
-
-class NIOFIFO(NIO):
-
-    """
-    Dynamips FIFO NIO.
-
-    :param hypervisor: Dynamips hypervisor instance
-    """
-
-    def __init__(self, hypervisor):
-
-        # create an unique name
-        name = 'fifo-{}'.format(uuid.uuid4())
-        super().__init__(name, hypervisor)
-
-    @asyncio.coroutine
-    def create(self):
-
-        yield from self._hypervisor.send("nio create_fifo {}".format(self._name))
-        log.info("NIO FIFO {name} created.".format(name=self._name))
-
-    @asyncio.coroutine
-    def crossconnect(self, nio):
-        """
-        Establishes a cross-connect between this FIFO NIO and another one.
-
-        :param nio: FIFO NIO instance
-        """
-
-        yield from self._hypervisor.send("nio crossconnect_fifo {name} {nio}".format(name=self._name,
-                                                                                     nio=nio))
-
-        log.info("NIO FIFO {name} crossconnected with {nio_name}.".format(name=self._name, nio_name=nio.name))
-
-    def __json__(self):
-
-        return {"type": "nio_fifo"}
diff --git a/gns3server/modules/dynamips/nios/nio_mcast.py b/gns3server/modules/dynamips/nios/nio_mcast.py
deleted file mode 100644
index 4ea47dc2..00000000
--- a/gns3server/modules/dynamips/nios/nio_mcast.py
+++ /dev/null
@@ -1,105 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright (C) 2013 GNS3 Technologies Inc.
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-"""
-Interface for multicast NIOs.
-"""
-
-import asyncio
-import uuid
-from .nio import NIO
-
-import logging
-log = logging.getLogger(__name__)
-
-
-class NIOMcast(NIO):
-
-    """
-    Dynamips Linux Ethernet NIO.
-
-    :param hypervisor: Dynamips hypervisor instance
-    :param group: multicast group to bind
-    :param port: port for binding
-    """
-
-    def __init__(self, hypervisor, group, port):
-
-        # create an unique name
-        name = 'mcast-{}'.format(uuid.uuid4())
-        self._group = group
-        self._port = port
-        self._ttl = 1  # default TTL
-        super().__init__(name, hypervisor)
-
-    @asyncio.coroutine
-    def create(self):
-
-        yield from self._hypervisor.send("nio create_mcast {name} {mgroup} {mport}".format(name=self._name,
-                                                                                           mgroup=self._group,
-                                                                                           mport=self._port))
-
-        log.info("NIO Multicast {name} created with mgroup={group}, mport={port}".format(name=self._name,
-                                                                                         group=self._group,
-                                                                                         port=self._port))
-
-    @property
-    def group(self):
-        """
-        Returns the multicast group
-
-        :returns: multicast group address
-        """
-
-        return self._group
-
-    @property
-    def port(self):
-        """
-        Returns the port
-
-        :returns: port number
-        """
-
-        return self._port
-
-    @property
-    def ttl(self):
-        """
-        Returns the TTL associated with the multicast address.
-
-        :returns: TTL value
-        """
-
-        return self._ttl
-
-    def set_ttl(self, ttl):
-        """
-        Sets the TTL for the multicast address
-
-        :param ttl: TTL value
-        """
-
-        yield from self._hypervisor.send("nio set_mcast_ttl {name} {ttl}".format(name=self._name,
-                                                                                 ttl=ttl))
-        self._ttl = ttl
-
-    def __json__(self):
-
-        return {"type": "nio_mcast",
-                "mgroup": self._mgroup,
-                "mport": self._mport}