diff --git a/.gitignore b/.gitignore
index c1434d71..385ea50d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -55,4 +55,5 @@ startup.vpcs
 .gns3_shell_history
 
 # Virtualenv
-env
\ No newline at end of file
+env.ropeproject
+.ropeproject
diff --git a/docs/curl.rst b/docs/curl.rst
index ea92f409..02cc2b04 100644
--- a/docs/curl.rst
+++ b/docs/curl.rst
@@ -222,6 +222,15 @@ This will display a red square in the middle of your topologies:
 Tips: you can embed png/jpg... by using a base64 encoding in the SVG.
 
 
+Add filter to the link
+######################
+
+Filter allow you to add error on a link.
+
+.. code-block:: shell-session
+    curl -X PUT "http://localhost:3080/v2/projects/b8c070f7-f34c-4b7b-ba6f-be3d26ed073f/links/007f2177-6790-4e1b-ac28-41fa226b2a06" -d '{"filters": {"frequency_drop": [5]}}'
+
+
 Creation of nodes
 #################
 
diff --git a/docs/glossary.rst b/docs/glossary.rst
index 3da68aea..9b25df9f 100644
--- a/docs/glossary.rst
+++ b/docs/glossary.rst
@@ -62,3 +62,8 @@ Symbol are the icon used for nodes.
 Scene
 -----
 The drawing area
+
+
+Filter
+------
+Packet filter this allow to add latency or packet drop.
diff --git a/gns3server/compute/base_manager.py b/gns3server/compute/base_manager.py
index 18dffa26..0885db90 100644
--- a/gns3server/compute/base_manager.py
+++ b/gns3server/compute/base_manager.py
@@ -373,7 +373,8 @@ class BaseManager:
                         sock.connect(sa)
             except OSError as e:
                 raise aiohttp.web.HTTPInternalServerError(text="Could not create an UDP connection to {}:{}: {}".format(rhost, rport, e))
-            nio = NIOUDP(lport, rhost, rport)
+            filters = nio_settings.get("filters", [])
+            nio = NIOUDP(lport, rhost, rport, filters)
         elif nio_settings["type"] == "nio_tap":
             tap_device = nio_settings["tap_device"]
             # if not is_interface_up(tap_device):
diff --git a/gns3server/compute/base_node.py b/gns3server/compute/base_node.py
index 1afa05cf..47640cf6 100644
--- a/gns3server/compute/base_node.py
+++ b/gns3server/compute/base_node.py
@@ -586,6 +586,30 @@ class BaseNode:
                                                                                              pcap_file=destination_nio.pcap_output_file))
 
         yield from self._ubridge_send('bridge start {name}'.format(name=bridge_name))
+        yield from self._ubridge_apply_filters(bridge_name, destination_nio.filters)
+
+    @asyncio.coroutine
+    def _update_ubridge_udp_connection(self, bridge_name, source_nio, destination_nio):
+        yield from self._ubridge_apply_filters(bridge_name, destination_nio.filters)
+
+    @asyncio.coroutine
+    def _ubridge_apply_filters(self, bridge_name, filters):
+        """
+        Apply filter like rate limiting
+
+        :param bridge_name: bridge name in uBridge
+        :param filters: Array of filter dictionnary
+        """
+        yield from self._ubridge_send('bridge reset_packet_filters ' + bridge_name)
+        i = 0
+        for (filter_type, values) in filters.items():
+            cmd = "bridge add_packet_filter {bridge_name} {filter_name} {filter_type} {filter_value}".format(
+                bridge_name=bridge_name,
+                filter_name="filter" + str(i),
+                filter_type=filter_type,
+                filter_value=" ".join([str(v) for v in values]))
+            yield from self._ubridge_send(cmd)
+            i += 1
 
     @asyncio.coroutine
     def _add_ubridge_ethernet_connection(self, bridge_name, ethernet_interface, block_host_traffic=True):
diff --git a/gns3server/compute/nios/nio_udp.py b/gns3server/compute/nios/nio_udp.py
index a87875fe..96811a94 100644
--- a/gns3server/compute/nios/nio_udp.py
+++ b/gns3server/compute/nios/nio_udp.py
@@ -32,12 +32,24 @@ class NIOUDP(NIO):
     :param rport: remote port number
     """
 
-    def __init__(self, lport, rhost, rport):
+    def __init__(self, lport, rhost, rport, filters):
 
         super().__init__()
         self._lport = lport
         self._rhost = rhost
         self._rport = rport
+        self._filters = filters
+
+    @property
+    def filters(self):
+        """
+        Return the list of filter on this NIO
+        """
+        return self._filters
+
+    @filters.setter
+    def filters(self, val):
+        self._filters = val
 
     @property
     def lport(self):
diff --git a/gns3server/compute/vpcs/vpcs_vm.py b/gns3server/compute/vpcs/vpcs_vm.py
index 3bc90264..8de816aa 100644
--- a/gns3server/compute/vpcs/vpcs_vm.py
+++ b/gns3server/compute/vpcs/vpcs_vm.py
@@ -73,6 +73,10 @@ class VPCSVM(BaseNode):
             self.startup_script = startup_script
         self._ethernet_adapter = EthernetAdapter()  # one adapter with 1 Ethernet interface
 
+    @property
+    def ethernet_adapter(self):
+        return self._ethernet_adapter
+
     @asyncio.coroutine
     def close(self):
         """
@@ -377,7 +381,7 @@ class VPCSVM(BaseNode):
         if self.ubridge:
             yield from self._add_ubridge_udp_connection("VPCS-{}".format(self._id), self._local_udp_tunnel[1], nio)
         elif self.is_running():
-            raise VPCSError("Sorry, adding a link to a started VPCS instance is not supported without using uBridge.")
+            raise VPCSError("Sorry, updating a link to a started VPCS instance is not supported without using uBridge.")
 
         self._ethernet_adapter.add_nio(port_number, nio)
         log.info('VPCS "{name}" [{id}]: {nio} added to port {port_number}'.format(name=self._name,
@@ -387,6 +391,16 @@ class VPCSVM(BaseNode):
 
         return nio
 
+    @asyncio.coroutine
+    def port_update_nio_binding(self, port_number, nio):
+        if not self._ethernet_adapter.port_exists(port_number):
+            raise VPCSError("Port {port_number} doesn't exist in adapter {adapter}".format(adapter=self._ethernet_adapter,
+                                                                                           port_number=port_number))
+        if self.ubridge:
+            yield from self._update_ubridge_udp_connection("VPCS-{}".format(self._id), self._local_udp_tunnel[1], nio)
+        elif self.is_running():
+            raise VPCSError("Sorry, adding a link to a started VPCS instance is not supported without using uBridge.")
+
     @asyncio.coroutine
     def port_remove_nio_binding(self, port_number):
         """
diff --git a/gns3server/controller/link.py b/gns3server/controller/link.py
index 90ec12fc..9e202bfb 100644
--- a/gns3server/controller/link.py
+++ b/gns3server/controller/link.py
@@ -26,6 +26,68 @@ import logging
 log = logging.getLogger(__name__)
 
 
+FILTERS = [
+    {
+        "type": "frequency_drop",
+        "name": "Frequency drop",
+        "description": "It will drop everything with a -1 frequency, drop every Nth packet with a positive frequency, or drop nothing",
+        "parameters": [
+            {
+                "name": "Frequency",
+                "minimum": -1,
+                "maximum": 32767,
+                "unit": "th packet"
+            }
+        ]
+    },
+    {
+        "type": "packet_loss",
+        "name": "Packet loss",
+        "description": "The percentage represents the chance for a packet to be lost",
+        "parameters": [
+            {
+                "name": "Chance",
+                "minimum": 0,
+                "maximum": 100,
+                "unit": "%"
+            }
+        ]
+    },
+    {
+        "type": "delay",
+        "name": "Delay",
+        "description": "Delay packets in milliseconds. You can add jitter in milliseconds (+/-) of the delay",
+        "parameters": [
+            {
+                "name": "Latency",
+                "minimum": 0,
+                "maximum": 32767,
+                "unit": "ms"
+            },
+            {
+                "name": "Jitter (-/+)",
+                "minimum": 0,
+                "maximum": 32767,
+                "unit": "ms"
+            }
+        ]
+    },
+    {
+        "type": "corrupt",
+        "name": "Corrupt",
+        "description": "The percentage represents the chance for a packet to be corrupted",
+        "parameters": [
+            {
+                "name": "Chance",
+                "minimum": 0,
+                "maximum": 100,
+                "unit": "%"
+            }
+        ]
+    }
+]
+
+
 class Link:
     """
     Base class for links.
@@ -44,6 +106,32 @@ class Link:
         self._streaming_pcap = None
         self._created = False
         self._link_type = "ethernet"
+        self._filters = {}
+
+    @property
+    def filters(self):
+        """
+        Get an array of filters
+        """
+        return self._filters
+
+    @asyncio.coroutine
+    def update_filters(self, filters):
+        """
+        Modify the filters list.
+
+        Filter with value 0 will be dropped because not active
+        """
+        new_filters = {}
+        for (filter, values) in filters.items():
+            values = [int(v) for v in values]
+            if len(values) != 0 and values[0] != 0:
+                new_filters[filter] = values
+
+        if new_filters != self.filters:
+            self._filters = new_filters
+            if self._created:
+                yield from self.update()
 
     @property
     def created(self):
@@ -127,6 +215,13 @@ class Link:
 
         raise NotImplementedError
 
+    @asyncio.coroutine
+    def update(self):
+        """
+        Update a link
+        """
+        raise NotImplementedError
+
     @asyncio.coroutine
     def delete(self):
         """
@@ -230,6 +325,28 @@ class Link:
         else:
             return None
 
+    def available_filters(self):
+        """
+        Return the list of filters compatible with this link
+
+        :returns: Array of filters
+        """
+        filter_node = self._get_filter_node()
+        if filter_node:
+            return FILTERS
+        return []
+
+    def _get_filter_node(self):
+        """
+        Return the node where the filter will run
+
+        :returns: None if no node support filtering else the node
+        """
+        for node in self._nodes:
+            if node["node"].node_type in ('vpcs', ):
+                return node["node"]
+        return None
+
     def __eq__(self, other):
         if not isinstance(other, Link):
             return False
@@ -253,7 +370,8 @@ class Link:
         if topology_dump:
             return {
                 "nodes": res,
-                "link_id": self._id
+                "link_id": self._id,
+                "filters": self._filters
             }
         return {
             "nodes": res,
@@ -262,5 +380,6 @@ class Link:
             "capturing": self._capturing,
             "capture_file_name": self._capture_file_name,
             "capture_file_path": self.capture_file_path,
-            "link_type": self._link_type
+            "link_type": self._link_type,
+            "filters": self._filters
         }
diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index cb60d8df..6936e95c 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -746,6 +746,8 @@ class Project:
                 for node_link in link_data["nodes"]:
                     node = self.get_node(node_link["node_id"])
                     yield from link.add_node(node, node_link["adapter_number"], node_link["port_number"], label=node_link.get("label"), dump=False)
+                if "filters" in link_data:
+                    yield from link.update_filters(link_data["filters"])
             for drawing_data in topology.get("drawings", []):
                 yield from self.add_drawing(dump=False, **drawing_data)
 
diff --git a/gns3server/controller/udp_link.py b/gns3server/controller/udp_link.py
index 5b87ec24..798f97c5 100644
--- a/gns3server/controller/udp_link.py
+++ b/gns3server/controller/udp_link.py
@@ -62,12 +62,21 @@ class UDPLink(Link):
         response = yield from node2.compute.post("/projects/{}/ports/udp".format(self._project.id))
         self._node2_port = response.json["udp_port"]
 
+        node1_filters = {}
+        node2_filters = {}
+        filter_node = self._get_filter_node()
+        if filter_node == node1:
+            node1_filters = self._filters
+        elif filter_node == node2:
+            node2_filters = self._filters
+
         # Create the tunnel on both side
         self._link_data.append({
             "lport": self._node1_port,
             "rhost": node2_host,
             "rport": self._node2_port,
-            "type": "nio_udp"
+            "type": "nio_udp",
+            "filters": node1_filters
         })
         yield from node1.post("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number1, port_number=port_number1), data=self._link_data[0], timeout=120)
 
@@ -75,7 +84,8 @@ class UDPLink(Link):
             "lport": self._node2_port,
             "rhost": node1_host,
             "rport": self._node1_port,
-            "type": "nio_udp"
+            "type": "nio_udp",
+            "filters": node2_filters
         })
         try:
             yield from node2.post("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number2, port_number=port_number2), data=self._link_data[1], timeout=120)
@@ -85,6 +95,25 @@ class UDPLink(Link):
             raise e
         self._created = True
 
+    @asyncio.coroutine
+    def update(self):
+        if len(self._link_data) == 0:
+            return
+        node1 = self._nodes[0]["node"]
+        node2 = self._nodes[1]["node"]
+        filter_node = self._get_filter_node()
+
+        if node1 == filter_node:
+            adapter_number1 = self._nodes[0]["adapter_number"]
+            port_number1 = self._nodes[0]["port_number"]
+            self._link_data[0]["filters"] = self._filters
+            yield from node1.put("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number1, port_number=port_number1), data=self._link_data[0], timeout=120)
+        elif node2 == filter_node:
+            adapter_number2 = self._nodes[1]["adapter_number"]
+            port_number2 = self._nodes[1]["port_number"]
+            self._link_data[1]["filters"] = self._filters
+            yield from node2.put("/adapters/{adapter_number}/ports/{port_number}/nio".format(adapter_number=adapter_number2, port_number=port_number2), data=self._link_data[1], timeout=221)
+
     @asyncio.coroutine
     def delete(self):
         """
diff --git a/gns3server/handlers/api/compute/vpcs_handler.py b/gns3server/handlers/api/compute/vpcs_handler.py
index d4096adf..cfd1a210 100644
--- a/gns3server/handlers/api/compute/vpcs_handler.py
+++ b/gns3server/handlers/api/compute/vpcs_handler.py
@@ -224,6 +224,33 @@ class VPCSHandler:
         response.set_status(201)
         response.json(nio)
 
+    @Route.put(
+        r"/projects/{project_id}/vpcs/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio",
+        parameters={
+            "project_id": "Project UUID",
+            "node_id": "Node UUID",
+            "adapter_number": "Network adapter where the nio is located",
+            "port_number": "Port from where the nio should be updated"
+        },
+        status_codes={
+            201: "NIO updated",
+            400: "Invalid request",
+            404: "Instance doesn't exist"
+        },
+        input=NIO_SCHEMA,
+        output=NIO_SCHEMA,
+        description="Update a NIO from a VPCS instance")
+    def update_nio(request, response):
+
+        vpcs_manager = VPCS.instance()
+        vm = vpcs_manager.get_node(request.match_info["node_id"], project_id=request.match_info["project_id"])
+        nio = vm.ethernet_adapter.get_nio(int(request.match_info["port_number"]))
+        if "filters" in request.json and nio:
+            nio.filters = request.json["filters"]
+        yield from vm.port_update_nio_binding(int(request.match_info["port_number"]), nio)
+        response.set_status(201)
+        response.json(request.json)
+
     @Route.delete(
         r"/projects/{project_id}/vpcs/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio",
         parameters={
diff --git a/gns3server/handlers/api/controller/link_handler.py b/gns3server/handlers/api/controller/link_handler.py
index 4854ad90..df229e01 100644
--- a/gns3server/handlers/api/controller/link_handler.py
+++ b/gns3server/handlers/api/controller/link_handler.py
@@ -62,6 +62,7 @@ class LinkHandler:
 
         project = yield from Controller.instance().get_loaded_project(request.match_info["project_id"])
         link = yield from project.add_link()
+        yield from link.update_filters(request.json.get("filters", {}))
         try:
             for node in request.json["nodes"]:
                 yield from link.add_node(project.get_node(node["node_id"]),
@@ -74,6 +75,24 @@ class LinkHandler:
         response.set_status(201)
         response.json(link)
 
+    @Route.get(
+        r"/projects/{project_id}/links/{link_id}/available_filters",
+        parameters={
+            "project_id": "Project UUID",
+            "link_id": "Link UUID"
+        },
+        status_codes={
+            200: "List of filters",
+            400: "Invalid request"
+        },
+        description="Return the list of filters available for this link")
+    def list_filters(request, response):
+
+        project = yield from Controller.instance().get_loaded_project(request.match_info["project_id"])
+        link = project.get_link(request.match_info["link_id"])
+        response.set_status(200)
+        response.json(link.available_filters())
+
     @Route.put(
         r"/projects/{project_id}/links/{link_id}",
         parameters={
@@ -91,7 +110,9 @@ class LinkHandler:
 
         project = yield from Controller.instance().get_loaded_project(request.match_info["project_id"])
         link = project.get_link(request.match_info["link_id"])
-        yield from link.update_nodes(request.json["nodes"])
+        yield from link.update_filters(request.json.get("filters", {}))
+        if "nodes" in request.json:
+            yield from link.update_nodes(request.json["nodes"])
         response.set_status(201)
         response.json(link)
 
diff --git a/gns3server/handlers/api/vpcs_handler.py b/gns3server/handlers/api/vpcs_handler.py
deleted file mode 100644
index 6af82ad7..00000000
--- a/gns3server/handlers/api/vpcs_handler.py
+++ /dev/null
@@ -1,230 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright (C) 2015 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/>.
-
-from aiohttp.web import HTTPConflict
-from ...web.route import Route
-from ...schemas.nio import NIO_SCHEMA
-from ...schemas.vpcs import VPCS_CREATE_SCHEMA
-from ...schemas.vpcs import VPCS_UPDATE_SCHEMA
-from ...schemas.vpcs import VPCS_OBJECT_SCHEMA
-from ...modules.vpcs import VPCS
-
-
-class VPCSHandler:
-
-    """
-    API entry points for VPCS.
-    """
-
-    @classmethod
-    @Route.post(
-        r"/projects/{project_id}/vpcs/vms",
-        parameters={
-            "project_id": "UUID for the project"
-        },
-        status_codes={
-            201: "Instance created",
-            400: "Invalid request",
-            409: "Conflict"
-        },
-        description="Create a new VPCS instance",
-        input=VPCS_CREATE_SCHEMA,
-        output=VPCS_OBJECT_SCHEMA)
-    def create(request, response):
-
-        vpcs = VPCS.instance()
-        vm = yield from vpcs.create_vm(request.json["name"],
-                                       request.match_info["project_id"],
-                                       request.json.get("vm_id"),
-                                       console=request.json.get("console"),
-                                       startup_script=request.json.get("startup_script"))
-        response.set_status(201)
-        response.json(vm)
-
-    @classmethod
-    @Route.get(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance"
-        },
-        status_codes={
-            200: "Success",
-            400: "Invalid request",
-            404: "Instance doesn't exist"
-        },
-        description="Get a VPCS instance",
-        output=VPCS_OBJECT_SCHEMA)
-    def show(request, response):
-
-        vpcs_manager = VPCS.instance()
-        vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
-        response.json(vm)
-
-    @classmethod
-    @Route.put(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance"
-        },
-        status_codes={
-            200: "Instance updated",
-            400: "Invalid request",
-            404: "Instance doesn't exist",
-            409: "Conflict"
-        },
-        description="Update a VPCS instance",
-        input=VPCS_UPDATE_SCHEMA,
-        output=VPCS_OBJECT_SCHEMA)
-    def update(request, response):
-
-        vpcs_manager = VPCS.instance()
-        vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
-        vm.name = request.json.get("name", vm.name)
-        vm.console = request.json.get("console", vm.console)
-        vm.startup_script = request.json.get("startup_script", vm.startup_script)
-        response.json(vm)
-
-    @classmethod
-    @Route.delete(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance"
-        },
-        status_codes={
-            204: "Instance deleted",
-            400: "Invalid request",
-            404: "Instance doesn't exist"
-        },
-        description="Delete a VPCS instance")
-    def delete(request, response):
-
-        yield from VPCS.instance().delete_vm(request.match_info["vm_id"])
-        response.set_status(204)
-
-    @classmethod
-    @Route.post(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}/start",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance"
-        },
-        status_codes={
-            204: "Instance started",
-            400: "Invalid request",
-            404: "Instance doesn't exist"
-        },
-        description="Start a VPCS instance",
-        output=VPCS_OBJECT_SCHEMA)
-    def start(request, response):
-
-        vpcs_manager = VPCS.instance()
-        vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
-        yield from vm.start()
-        response.json(vm)
-
-    @classmethod
-    @Route.post(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}/stop",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance"
-        },
-        status_codes={
-            204: "Instance stopped",
-            400: "Invalid request",
-            404: "Instance doesn't exist"
-        },
-        description="Stop a VPCS instance")
-    def stop(request, response):
-
-        vpcs_manager = VPCS.instance()
-        vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
-        yield from vm.stop()
-        response.set_status(204)
-
-    @classmethod
-    @Route.post(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}/reload",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance",
-        },
-        status_codes={
-            204: "Instance reloaded",
-            400: "Invalid request",
-            404: "Instance doesn't exist"
-        },
-        description="Reload a VPCS instance")
-    def reload(request, response):
-
-        vpcs_manager = VPCS.instance()
-        vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
-        yield from vm.reload()
-        response.set_status(204)
-
-    @Route.post(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance",
-            "adapter_number": "Network adapter where the nio is located",
-            "port_number": "Port where the nio should be added"
-        },
-        status_codes={
-            201: "NIO created",
-            400: "Invalid request",
-            404: "Instance doesn't exist"
-        },
-        description="Add a NIO to a VPCS instance",
-        input=NIO_SCHEMA,
-        output=NIO_SCHEMA)
-    def create_nio(request, response):
-
-        vpcs_manager = VPCS.instance()
-        vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
-        nio_type = request.json["type"]
-        if nio_type not in ("nio_udp", "nio_tap"):
-            raise HTTPConflict(text="NIO of type {} is not supported".format(nio_type))
-        nio = vpcs_manager.create_nio(vm.vpcs_path(), request.json)
-        vm.port_add_nio_binding(int(request.match_info["port_number"]), nio)
-        response.set_status(201)
-        response.json(nio)
-
-    @classmethod
-    @Route.delete(
-        r"/projects/{project_id}/vpcs/vms/{vm_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio",
-        parameters={
-            "project_id": "UUID for the project",
-            "vm_id": "UUID for the instance",
-            "adapter_number": "Network adapter where the nio is located",
-            "port_number": "Port from where the nio should be removed"
-        },
-        status_codes={
-            204: "NIO deleted",
-            400: "Invalid request",
-            404: "Instance doesn't exist"
-        },
-        description="Remove a NIO from a VPCS instance")
-    def delete_nio(request, response):
-
-        vpcs_manager = VPCS.instance()
-        vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
-        vm.port_remove_nio_binding(int(request.match_info["port_number"]))
-        response.set_status(204)
diff --git a/gns3server/schemas/filter.py b/gns3server/schemas/filter.py
new file mode 100644
index 00000000..d7f09972
--- /dev/null
+++ b/gns3server/schemas/filter.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2017 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/>.
+
+
+FILTER_OBJECT_SCHEMA = {
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "description": "Packet filter. This allow to simulate latency and errors",
+    "type": "object"
+}
diff --git a/gns3server/schemas/link.py b/gns3server/schemas/link.py
index 877c4a89..d3e66dee 100644
--- a/gns3server/schemas/link.py
+++ b/gns3server/schemas/link.py
@@ -16,7 +16,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from .label import LABEL_OBJECT_SCHEMA
-
+from .filter import FILTER_OBJECT_SCHEMA
 
 LINK_OBJECT_SCHEMA = {
     "$schema": "http://json-schema.org/draft-04/schema#",
@@ -64,6 +64,7 @@ LINK_OBJECT_SCHEMA = {
                 "additionalProperties": False
             }
         },
+        "filters": FILTER_OBJECT_SCHEMA,
         "capturing": {
             "description": "Read only property. True if a capture running on the link",
             "type": "boolean"
@@ -81,7 +82,6 @@ LINK_OBJECT_SCHEMA = {
             "enum": ["ethernet", "serial"]
         }
     },
-    "required": ["nodes"],
     "additionalProperties": False
 }
 
diff --git a/gns3server/schemas/nio.py b/gns3server/schemas/nio.py
index 5efe4840..e45211a7 100644
--- a/gns3server/schemas/nio.py
+++ b/gns3server/schemas/nio.py
@@ -15,6 +15,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+from .filter import FILTER_OBJECT_SCHEMA
+
 
 NIO_SCHEMA = {
     "$schema": "http://json-schema.org/draft-04/schema#",
@@ -43,7 +45,8 @@ NIO_SCHEMA = {
                     "type": "integer",
                     "minimum": 1,
                     "maximum": 65535
-                }
+                },
+                "filters": FILTER_OBJECT_SCHEMA
             },
             "required": ["type", "lport", "rhost", "rport"],
             "additionalProperties": False
diff --git a/gns3server/ubridge/hypervisor.py b/gns3server/ubridge/hypervisor.py
index 9deb7b83..a7b1123c 100644
--- a/gns3server/ubridge/hypervisor.py
+++ b/gns3server/ubridge/hypervisor.py
@@ -138,8 +138,8 @@ class Hypervisor(UBridgeHypervisor):
             match = re.search("ubridge version ([0-9a-z\.]+)", output)
             if match:
                 self._version = match.group(1)
-                if parse_version(self._version) < parse_version("0.9.7"):
-                    raise UbridgeError("uBridge executable version must be >= 0.9.7")
+                if parse_version(self._version) < parse_version("0.9.12"):
+                    raise UbridgeError("uBridge executable version must be >= 0.9.12")
             else:
                 raise UbridgeError("Could not determine uBridge version for {}".format(self._path))
         except (OSError, subprocess.SubprocessError) as e:
diff --git a/tests/compute/builtin/nodes/test_cloud.py b/tests/compute/builtin/nodes/test_cloud.py
index 43fee80d..f8eb4a9a 100644
--- a/tests/compute/builtin/nodes/test_cloud.py
+++ b/tests/compute/builtin/nodes/test_cloud.py
@@ -26,7 +26,7 @@ from tests.utils import asyncio_patch
 
 @pytest.fixture
 def nio():
-    return NIOUDP(4242, "127.0.0.1", 4343)
+    return NIOUDP(4242, "127.0.0.1", 4343, [])
 
 
 @pytest.fixture
diff --git a/tests/compute/dynamips/test_ethernet_switch.py b/tests/compute/dynamips/test_ethernet_switch.py
index 1520a4be..e316da7f 100644
--- a/tests/compute/dynamips/test_ethernet_switch.py
+++ b/tests/compute/dynamips/test_ethernet_switch.py
@@ -24,9 +24,9 @@ def test_arp_command(async_run):
     node = AsyncioMagicMock()
     node.name = "Test"
     node.nios = {}
-    node.nios[0] = NIOUDP(55, "127.0.0.1", 56)
+    node.nios[0] = NIOUDP(55, "127.0.0.1", 56, [])
     node.nios[0].name = "Ethernet0"
-    node.nios[1] = NIOUDP(55, "127.0.0.1", 56)
+    node.nios[1] = NIOUDP(55, "127.0.0.1", 56, [])
     node.nios[1].name = "Ethernet1"
     node._hypervisor.send = AsyncioMagicMock(return_value=["0050.7966.6801  1  Ethernet0", "0050.7966.6802  1  Ethernet1"])
     console = EthernetSwitchConsole(node)
diff --git a/tests/compute/test_base_node.py b/tests/compute/test_base_node.py
index 20a3ee06..e42f3e98 100644
--- a/tests/compute/test_base_node.py
+++ b/tests/compute/test_base_node.py
@@ -19,7 +19,7 @@ import pytest
 import aiohttp
 import asyncio
 import os
-from tests.utils import asyncio_patch
+from tests.utils import asyncio_patch, AsyncioMagicMock
 
 
 from unittest.mock import patch, MagicMock
@@ -28,6 +28,7 @@ from gns3server.compute.docker.docker_vm import DockerVM
 from gns3server.compute.vpcs.vpcs_error import VPCSError
 from gns3server.compute.error import NodeError
 from gns3server.compute.vpcs import VPCS
+from gns3server.compute.nios.nio_udp import NIOUDP
 
 
 @pytest.fixture(scope="function")
@@ -121,3 +122,26 @@ def test_change_aux_port(node, port_manager):
     node.aux = port2
     assert node.aux == port2
     port_manager.reserve_tcp_port(port1, node.project)
+
+
+def test_update_ubridge_udp_connection(node, async_run):
+    filters = [{
+        "type": "latency",
+        "value": 10
+    }]
+
+    snio = NIOUDP(1245, "localhost", 1246, [])
+    dnio = NIOUDP(1245, "localhost", 1244, filters)
+    with asyncio_patch("gns3server.compute.base_node.BaseNode._ubridge_apply_filters") as mock:
+        async_run(node._update_ubridge_udp_connection('VPCS-10', snio, dnio))
+    mock.assert_called_with("VPCS-10", filters)
+
+
+def test_ubridge_apply_filters(node, async_run):
+    filters = {
+        "latency": [10]
+    }
+    node._ubridge_send = AsyncioMagicMock()
+    async_run(node._ubridge_apply_filters("VPCS-10", filters))
+    node._ubridge_send.assert_any_call("bridge reset_packet_filters VPCS-10")
+    node._ubridge_send.assert_any_call("bridge add_packet_filter VPCS-10 filter0 latency 10")
diff --git a/tests/controller/test_link.py b/tests/controller/test_link.py
index 40022544..24638fdb 100644
--- a/tests/controller/test_link.py
+++ b/tests/controller/test_link.py
@@ -230,6 +230,7 @@ def test_json(async_run, project, compute, link):
                 }
             }
         ],
+        "filters": {},
         "link_type": "ethernet",
         "capturing": False,
         "capture_file_name": None,
@@ -262,7 +263,8 @@ def test_json(async_run, project, compute, link):
                     'style': 'font-size: 10; font-style: Verdana'
                 }
             }
-        ]
+        ],
+        "filters": {}
     }
 
 
@@ -348,3 +350,49 @@ def test_delete(async_run, project, compute):
 
     async_run(link.delete())
     assert link not in node2.link
+
+
+def test_update_filters(async_run, project, compute):
+    node1 = Node(project, compute, "node1", node_type="qemu")
+    node1._ports = [EthernetPort("E0", 0, 0, 4)]
+
+    link = Link(project)
+    link.create = AsyncioMagicMock()
+    link._project.controller.notification.emit = MagicMock()
+    project.dump = AsyncioMagicMock()
+    async_run(link.add_node(node1, 0, 4))
+
+    node2 = Node(project, compute, "node2", node_type="qemu")
+    node2._ports = [EthernetPort("E0", 0, 0, 4)]
+    async_run(link.add_node(node2, 0, 4))
+
+    link.update = AsyncioMagicMock()
+    assert link._created
+    async_run(link.update_filters({
+        "packet_loss": ["10"],
+        "delay": ["50", "10"],
+        "frequency_drop": ["0"]
+    }))
+    assert link.filters == {
+        "packet_loss": [10],
+        "delay": [50, 10]
+    }
+    assert link.update.called
+
+
+def test_available_filters(async_run, project, compute):
+    node1 = Node(project, compute, "node1", node_type="qemu")
+    node1._ports = [EthernetPort("E0", 0, 0, 4)]
+
+    link = Link(project)
+    link.create = AsyncioMagicMock()
+    assert link.available_filters() == []
+
+    # Qemu is not supported should return 0 filters
+    async_run(link.add_node(node1, 0, 4))
+    assert link.available_filters() == []
+
+    node2 = Node(project, compute, "node2", node_type="vpcs")
+    node2._ports = [EthernetPort("E0", 0, 0, 4)]
+    async_run(link.add_node(node2, 0, 4))
+    assert len(link.available_filters()) > 0
diff --git a/tests/controller/test_project.py b/tests/controller/test_project.py
index d56325f2..2ca0d061 100644
--- a/tests/controller/test_project.py
+++ b/tests/controller/test_project.py
@@ -617,4 +617,4 @@ def test_add_iou_node_and_check_if_gets_application_id(project, async_run):
     node = async_run(project.add_node(
         compute, "test", None, node_type="iou", application_id=333, properties={"startup_config": "test.cfg"}))
     assert mocked_get_app_id.called
-    assert node.properties['application_id'] == 333
\ No newline at end of file
+    assert node.properties['application_id'] == 333
diff --git a/tests/controller/test_udp_link.py b/tests/controller/test_udp_link.py
index 023630bb..3ab6581f 100644
--- a/tests/controller/test_udp_link.py
+++ b/tests/controller/test_udp_link.py
@@ -19,7 +19,7 @@ import pytest
 import asyncio
 import aiohttp
 from unittest.mock import MagicMock
-from tests.utils import asyncio_patch, AsyncioMagicMock
+from tests.utils import AsyncioMagicMock
 
 from gns3server.controller.project import Project
 from gns3server.controller.udp_link import UDPLink
@@ -52,6 +52,7 @@ def test_create(async_run, project):
 
     link = UDPLink(project)
     async_run(link.add_node(node1, 0, 4))
+    async_run(link.update_filters({"latency": [10]}))
 
     @asyncio.coroutine
     def compute1_callback(path, data={}, **kwargs):
@@ -83,13 +84,15 @@ def test_create(async_run, project):
         "lport": 1024,
         "rhost": "192.168.1.2",
         "rport": 2048,
-        "type": "nio_udp"
+        "type": "nio_udp",
+        "filters": {"latency": [10]}
     }, timeout=120)
     compute2.post.assert_any_call("/projects/{}/vpcs/nodes/{}/adapters/3/ports/1/nio".format(project.id, node2.id), data={
         "lport": 2048,
         "rhost": "192.168.1.1",
         "rport": 1024,
-        "type": "nio_udp"
+        "type": "nio_udp",
+        "filters": {}
     }, timeout=120)
 
 
@@ -147,13 +150,15 @@ def test_create_one_side_failure(async_run, project):
         "lport": 1024,
         "rhost": "192.168.1.2",
         "rport": 2048,
-        "type": "nio_udp"
+        "type": "nio_udp",
+        "filters": {}
     }, timeout=120)
     compute2.post.assert_any_call("/projects/{}/vpcs/nodes/{}/adapters/3/ports/1/nio".format(project.id, node2.id), data={
         "lport": 2048,
         "rhost": "192.168.1.1",
         "rport": 1024,
-        "type": "nio_udp"
+        "type": "nio_udp",
+        "filters": {}
     }, timeout=120)
     # The link creation has failed we rollback the nio
     compute1.delete.assert_any_call("/projects/{}/vpcs/nodes/{}/adapters/0/ports/4/nio".format(project.id, node1.id), timeout=120)
@@ -302,3 +307,77 @@ def test_node_updated(project, async_run):
     node_vpcs._status = "stopped"
     async_run(link.node_updated(node_vpcs))
     assert link.stop_capture.called
+
+
+def test_update(async_run, project):
+    compute1 = MagicMock()
+    compute2 = MagicMock()
+
+    node1 = Node(project, compute1, "node1", node_type="vpcs")
+    node1._ports = [EthernetPort("E0", 0, 0, 4)]
+    node2 = Node(project, compute2, "node2", node_type="vpcs")
+    node2._ports = [EthernetPort("E0", 0, 3, 1)]
+
+    @asyncio.coroutine
+    def subnet_callback(compute2):
+        """
+        Fake subnet callback
+        """
+        return ("192.168.1.1", "192.168.1.2")
+
+    compute1.get_ip_on_same_subnet.side_effect = subnet_callback
+
+    link = UDPLink(project)
+    async_run(link.add_node(node1, 0, 4))
+    async_run(link.update_filters({"latency": [10]}))
+
+    @asyncio.coroutine
+    def compute1_callback(path, data={}, **kwargs):
+        """
+        Fake server
+        """
+        if "/ports/udp" in path:
+            response = MagicMock()
+            response.json = {"udp_port": 1024}
+            return response
+
+    @asyncio.coroutine
+    def compute2_callback(path, data={}, **kwargs):
+        """
+        Fake server
+        """
+        if "/ports/udp" in path:
+            response = MagicMock()
+            response.json = {"udp_port": 2048}
+            return response
+
+    compute1.post.side_effect = compute1_callback
+    compute1.host = "example.com"
+    compute2.post.side_effect = compute2_callback
+    compute2.host = "example.org"
+    async_run(link.add_node(node2, 3, 1))
+
+    compute1.post.assert_any_call("/projects/{}/vpcs/nodes/{}/adapters/0/ports/4/nio".format(project.id, node1.id), data={
+        "lport": 1024,
+        "rhost": "192.168.1.2",
+        "rport": 2048,
+        "type": "nio_udp",
+        "filters": {"latency": [10]}
+    }, timeout=120)
+    compute2.post.assert_any_call("/projects/{}/vpcs/nodes/{}/adapters/3/ports/1/nio".format(project.id, node2.id), data={
+        "lport": 2048,
+        "rhost": "192.168.1.1",
+        "rport": 1024,
+        "type": "nio_udp",
+        "filters": {}
+    }, timeout=120)
+
+    assert link.created
+    async_run(link.update_filters({"drop": [5]}))
+    compute1.put.assert_any_call("/projects/{}/vpcs/nodes/{}/adapters/0/ports/4/nio".format(project.id, node1.id), data={
+        "lport": 1024,
+        "rhost": "192.168.1.2",
+        "rport": 2048,
+        "type": "nio_udp",
+        "filters": {"drop": [5]}
+    }, timeout=120)
diff --git a/tests/handlers/api/compute/test_vpcs.py b/tests/handlers/api/compute/test_vpcs.py
index 85456e5e..265a11fd 100644
--- a/tests/handlers/api/compute/test_vpcs.py
+++ b/tests/handlers/api/compute/test_vpcs.py
@@ -74,6 +74,20 @@ def test_vpcs_nio_create_udp(http_compute, vm):
     assert response.json["type"] == "nio_udp"
 
 
+def test_vpcs_nio_update_udp(http_compute, vm):
+    response = http_compute.put("/projects/{project_id}/vpcs/nodes/{node_id}/adapters/0/ports/0/nio".format(project_id=vm["project_id"], node_id=vm["node_id"]),
+                                {
+                                    "type": "nio_udp",
+                                    "lport": 4242,
+                                    "rport": 4343,
+                                    "rhost": "127.0.0.1",
+                                    "filters": {}},
+                                example=True)
+    assert response.status == 201
+    assert response.route == "/projects/{project_id}/vpcs/nodes/{node_id}/adapters/{adapter_number:\d+}/ports/{port_number:\d+}/nio"
+    assert response.json["type"] == "nio_udp"
+
+
 @pytest.mark.skipif(sys.platform.startswith("win"), reason="Not supported on Windows")
 def test_vpcs_nio_create_tap(http_compute, vm, ethernet_device):
     with patch("gns3server.compute.base_manager.BaseManager.has_privileged_access", return_value=True):
diff --git a/tests/handlers/api/controller/test_link.py b/tests/handlers/api/controller/test_link.py
index a7e3194e..e1ff8fa6 100644
--- a/tests/handlers/api/controller/test_link.py
+++ b/tests/handlers/api/controller/test_link.py
@@ -33,7 +33,7 @@ from gns3server.handlers.api.controller.project_handler import ProjectHandler
 from gns3server.controller import Controller
 from gns3server.controller.ports.ethernet_port import EthernetPort
 from gns3server.controller.node import Node
-from gns3server.controller.link import Link
+from gns3server.controller.link import Link, FILTERS
 
 
 @pytest.fixture
@@ -59,6 +59,11 @@ def test_create_link(http_controller, tmpdir, project, compute, async_run):
     node2 = async_run(project.add_node(compute, "node2", None, node_type="qemu"))
     node2._ports = [EthernetPort("E0", 0, 2, 4)]
 
+    filters = {
+        "latency": [10],
+        "frequency_drop": [50]
+    }
+
     with asyncio_patch("gns3server.controller.udp_link.UDPLink.create") as mock:
         response = http_controller.post("/projects/{}/links".format(project.id), {
             "nodes": [
@@ -77,7 +82,8 @@ def test_create_link(http_controller, tmpdir, project, compute, async_run):
                     "adapter_number": 2,
                     "port_number": 4
                 }
-            ]
+            ],
+            "filters": filters
         }, example=True)
     assert mock.called
     assert response.status == 201
@@ -85,6 +91,7 @@ def test_create_link(http_controller, tmpdir, project, compute, async_run):
     assert len(response.json["nodes"]) == 2
     assert response.json["nodes"][0]["label"]["x"] == 42
     assert len(project.links) == 1
+    assert list(project.links.values())[0].filters == filters
 
 
 def test_create_link_failure(http_controller, tmpdir, project, compute, async_run):
@@ -135,6 +142,11 @@ def test_update_link(http_controller, tmpdir, project, compute, async_run):
     node2 = async_run(project.add_node(compute, "node2", None, node_type="qemu"))
     node2._ports = [EthernetPort("E0", 0, 2, 4)]
 
+    filters = {
+        "latency": 10,
+        "frequency_drop": 50
+    }
+
     with asyncio_patch("gns3server.controller.udp_link.UDPLink.create") as mock:
         response = http_controller.post("/projects/{}/links".format(project.id), {
             "nodes": [
@@ -174,10 +186,12 @@ def test_update_link(http_controller, tmpdir, project, compute, async_run):
                 "adapter_number": 2,
                 "port_number": 4
             }
-        ]
+        ],
+        "filters": filters
     })
     assert response.status == 201
     assert response.json["nodes"][0]["label"]["x"] == 64
+    assert list(project.links.values())[0].filters == filters
 
 
 def test_list_link(http_controller, tmpdir, project, compute, async_run):
@@ -190,24 +204,31 @@ def test_list_link(http_controller, tmpdir, project, compute, async_run):
     node2 = async_run(project.add_node(compute, "node2", None, node_type="qemu"))
     node2._ports = [EthernetPort("E0", 0, 2, 4)]
 
+    filters = {
+        "latency": 10,
+        "frequency_drop": 50
+    }
+    nodes = [
+        {
+            "node_id": node1.id,
+            "adapter_number": 0,
+            "port_number": 3
+        },
+        {
+            "node_id": node2.id,
+            "adapter_number": 2,
+            "port_number": 4
+        }
+    ]
     with asyncio_patch("gns3server.controller.udp_link.UDPLink.create") as mock:
         response = http_controller.post("/projects/{}/links".format(project.id), {
-            "nodes": [
-                {
-                    "node_id": node1.id,
-                    "adapter_number": 0,
-                    "port_number": 3
-                },
-                {
-                    "node_id": node2.id,
-                    "adapter_number": 2,
-                    "port_number": 4
-                }
-            ]
+            "nodes": nodes,
+            "filters": filters
         })
     response = http_controller.get("/projects/{}/links".format(project.id), example=True)
     assert response.status == 200
     assert len(response.json) == 1
+    assert response.json[0]["filters"] == filters
 
 
 def test_start_capture(http_controller, tmpdir, project, compute, async_run):
@@ -258,3 +279,14 @@ def test_delete_link(http_controller, tmpdir, project, compute, async_run):
         response = http_controller.delete("/projects/{}/links/{}".format(project.id, link.id), example=True)
     assert mock.called
     assert response.status == 204
+
+
+def test_list_filters(http_controller, tmpdir, project, async_run):
+
+    link = Link(project)
+    project._links = {link.id: link}
+    with patch("gns3server.controller.link.Link.available_filters", return_value=FILTERS) as mock:
+        response = http_controller.get("/projects/{}/links/{}/available_filters".format(project.id, link.id), example=True)
+    assert mock.called
+    assert response.status == 200
+    assert response.json == FILTERS