diff --git a/.coveragerc b/.coveragerc
index bd9bf196321..88ffa7ef150 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -788,6 +788,9 @@ omit =
     homeassistant/components/vesync/switch.py
     homeassistant/components/viaggiatreno/sensor.py
     homeassistant/components/vicare/*
+    homeassistant/components/vilfo/__init__.py
+    homeassistant/components/vilfo/sensor.py
+    homeassistant/components/vilfo/const.py
     homeassistant/components/vivotek/camera.py
     homeassistant/components/vlc/media_player.py
     homeassistant/components/vlc_telnet/media_player.py
diff --git a/CODEOWNERS b/CODEOWNERS
index 48a23bba619..a96f3bb5b82 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -385,6 +385,7 @@ homeassistant/components/versasense/* @flamm3blemuff1n
 homeassistant/components/version/* @fabaff
 homeassistant/components/vesync/* @markperdue @webdjoe
 homeassistant/components/vicare/* @oischinger
+homeassistant/components/vilfo/* @ManneW
 homeassistant/components/vivotek/* @HarlemSquirrel
 homeassistant/components/vizio/* @raman325
 homeassistant/components/vlc_telnet/* @rodripf
diff --git a/homeassistant/components/vilfo/__init__.py b/homeassistant/components/vilfo/__init__.py
new file mode 100644
index 00000000000..ffa628d6db2
--- /dev/null
+++ b/homeassistant/components/vilfo/__init__.py
@@ -0,0 +1,125 @@
+"""The Vilfo Router integration."""
+import asyncio
+from datetime import timedelta
+import logging
+
+from vilfo import Client as VilfoClient
+from vilfo.exceptions import VilfoException
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_ACCESS_TOKEN, CONF_HOST
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import ConfigEntryNotReady
+from homeassistant.helpers.typing import ConfigType, HomeAssistantType
+from homeassistant.util import Throttle
+
+from .const import ATTR_BOOT_TIME, ATTR_LOAD, DOMAIN, ROUTER_DEFAULT_HOST
+
+PLATFORMS = ["sensor"]
+
+DEFAULT_SCAN_INTERVAL = timedelta(seconds=30)
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup(hass: HomeAssistantType, config: ConfigType):
+    """Set up the Vilfo Router component."""
+    hass.data.setdefault(DOMAIN, {})
+    return True
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry):
+    """Set up Vilfo Router from a config entry."""
+    host = entry.data[CONF_HOST]
+    access_token = entry.data[CONF_ACCESS_TOKEN]
+
+    vilfo_router = VilfoRouterData(hass, host, access_token)
+
+    await vilfo_router.async_update()
+
+    if not vilfo_router.available:
+        raise ConfigEntryNotReady
+
+    hass.data[DOMAIN][entry.entry_id] = vilfo_router
+
+    for platform in PLATFORMS:
+        hass.async_create_task(
+            hass.config_entries.async_forward_entry_setup(entry, platform)
+        )
+
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry):
+    """Unload a config entry."""
+    unload_ok = all(
+        await asyncio.gather(
+            *[
+                hass.config_entries.async_forward_entry_unload(entry, platform)
+                for platform in PLATFORMS
+            ]
+        )
+    )
+    if unload_ok:
+        hass.data[DOMAIN].pop(entry.entry_id)
+
+    return unload_ok
+
+
+class VilfoRouterData:
+    """Define an object to hold sensor data."""
+
+    def __init__(self, hass, host, access_token):
+        """Initialize."""
+        self._vilfo = VilfoClient(host, access_token)
+        self.hass = hass
+        self.host = host
+        self.available = False
+        self.firmware_version = None
+        self.mac_address = self._vilfo.mac
+        self.data = {}
+        self._unavailable_logged = False
+
+    @property
+    def unique_id(self):
+        """Get the unique_id for the Vilfo Router."""
+        if self.mac_address:
+            return self.mac_address
+
+        if self.host == ROUTER_DEFAULT_HOST:
+            return self.host
+
+        return self.host
+
+    def _fetch_data(self):
+        board_information = self._vilfo.get_board_information()
+        load = self._vilfo.get_load()
+
+        return {
+            "board_information": board_information,
+            "load": load,
+        }
+
+    @Throttle(DEFAULT_SCAN_INTERVAL)
+    async def async_update(self):
+        """Update data using calls to VilfoClient library."""
+        try:
+            data = await self.hass.async_add_executor_job(self._fetch_data)
+
+            self.firmware_version = data["board_information"]["version"]
+            self.data[ATTR_BOOT_TIME] = data["board_information"]["bootTime"]
+            self.data[ATTR_LOAD] = data["load"]
+
+            self.available = True
+        except VilfoException as error:
+            if not self._unavailable_logged:
+                _LOGGER.error(
+                    "Could not fetch data from %s, error: %s", self.host, error
+                )
+                self._unavailable_logged = True
+            self.available = False
+            return
+
+        if self.available and self._unavailable_logged:
+            _LOGGER.info("Vilfo Router %s is available again", self.host)
+            self._unavailable_logged = False
diff --git a/homeassistant/components/vilfo/config_flow.py b/homeassistant/components/vilfo/config_flow.py
new file mode 100644
index 00000000000..2b9df3d9195
--- /dev/null
+++ b/homeassistant/components/vilfo/config_flow.py
@@ -0,0 +1,147 @@
+"""Config flow for Vilfo Router integration."""
+import ipaddress
+import logging
+import re
+
+from vilfo import Client as VilfoClient
+from vilfo.exceptions import (
+    AuthenticationException as VilfoAuthenticationException,
+    VilfoException,
+)
+import voluptuous as vol
+
+from homeassistant import config_entries, core, exceptions
+from homeassistant.const import CONF_ACCESS_TOKEN, CONF_HOST, CONF_ID, CONF_MAC
+
+from .const import DOMAIN  # pylint:disable=unused-import
+from .const import ROUTER_DEFAULT_HOST
+
+_LOGGER = logging.getLogger(__name__)
+
+DATA_SCHEMA = vol.Schema(
+    {
+        vol.Required(CONF_HOST, default=ROUTER_DEFAULT_HOST): str,
+        vol.Required(CONF_ACCESS_TOKEN, default=""): str,
+    }
+)
+
+RESULT_SUCCESS = "success"
+RESULT_CANNOT_CONNECT = "cannot_connect"
+RESULT_INVALID_AUTH = "invalid_auth"
+
+
+def host_valid(host):
+    """Return True if hostname or IP address is valid."""
+    try:
+        if ipaddress.ip_address(host).version == (4 or 6):
+            return True
+    except ValueError:
+        disallowed = re.compile(r"[^a-zA-Z\d\-]")
+        return all(x and not disallowed.search(x) for x in host.split("."))
+
+
+def _try_connect_and_fetch_basic_info(host, token):
+    """Attempt to connect and call the ping endpoint and, if successful, fetch basic information."""
+
+    # Perform the ping. This doesn't validate authentication.
+    controller = VilfoClient(host=host, token=token)
+    result = {"type": None, "data": {}}
+
+    try:
+        controller.ping()
+    except VilfoException:
+        result["type"] = RESULT_CANNOT_CONNECT
+        result["data"] = CannotConnect
+        return result
+
+    # Perform a call that requires authentication.
+    try:
+        controller.get_board_information()
+    except VilfoAuthenticationException:
+        result["type"] = RESULT_INVALID_AUTH
+        result["data"] = InvalidAuth
+        return result
+
+    if controller.mac:
+        result["data"][CONF_ID] = controller.mac
+        result["data"][CONF_MAC] = controller.mac
+    else:
+        result["data"][CONF_ID] = host
+        result["data"][CONF_MAC] = None
+
+    result["type"] = RESULT_SUCCESS
+
+    return result
+
+
+async def validate_input(hass: core.HomeAssistant, data):
+    """Validate the user input allows us to connect.
+
+    Data has the keys from DATA_SCHEMA with values provided by the user.
+    """
+
+    # Validate the host before doing anything else.
+    if not host_valid(data[CONF_HOST]):
+        raise InvalidHost
+
+    config = {}
+
+    result = await hass.async_add_executor_job(
+        _try_connect_and_fetch_basic_info, data[CONF_HOST], data[CONF_ACCESS_TOKEN]
+    )
+
+    if result["type"] != RESULT_SUCCESS:
+        raise result["data"]
+
+    # Return some info we want to store in the config entry.
+    result_data = result["data"]
+    config["title"] = f"{data[CONF_HOST]}"
+    config[CONF_MAC] = result_data[CONF_MAC]
+    config[CONF_HOST] = data[CONF_HOST]
+    config[CONF_ID] = result_data[CONF_ID]
+
+    return config
+
+
+class DomainConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Vilfo Router."""
+
+    VERSION = 1
+    CONNECTION_CLASS = config_entries.CONN_CLASS_LOCAL_POLL
+
+    async def async_step_user(self, user_input=None):
+        """Handle the initial step."""
+        errors = {}
+        if user_input is not None:
+            try:
+                info = await validate_input(self.hass, user_input)
+            except InvalidHost:
+                errors[CONF_HOST] = "wrong_host"
+            except CannotConnect:
+                errors["base"] = "cannot_connect"
+            except InvalidAuth:
+                errors["base"] = "invalid_auth"
+            except Exception as err:  # pylint: disable=broad-except
+                _LOGGER.error("Unexpected exception: %s", err)
+                errors["base"] = "unknown"
+            else:
+                await self.async_set_unique_id(info[CONF_ID])
+                self._abort_if_unique_id_configured()
+
+                return self.async_create_entry(title=info["title"], data=user_input)
+
+        return self.async_show_form(
+            step_id="user", data_schema=DATA_SCHEMA, errors=errors
+        )
+
+
+class CannotConnect(exceptions.HomeAssistantError):
+    """Error to indicate we cannot connect."""
+
+
+class InvalidAuth(exceptions.HomeAssistantError):
+    """Error to indicate there is invalid auth."""
+
+
+class InvalidHost(exceptions.HomeAssistantError):
+    """Error to indicate that hostname/IP address is invalid."""
diff --git a/homeassistant/components/vilfo/const.py b/homeassistant/components/vilfo/const.py
new file mode 100644
index 00000000000..1a40b8430d7
--- /dev/null
+++ b/homeassistant/components/vilfo/const.py
@@ -0,0 +1,36 @@
+"""Constants for the Vilfo Router integration."""
+from homeassistant.const import DEVICE_CLASS_TIMESTAMP
+
+DOMAIN = "vilfo"
+
+ATTR_API_DATA_FIELD = "api_data_field"
+ATTR_API_DATA_FIELD_LOAD = "load"
+ATTR_API_DATA_FIELD_BOOT_TIME = "boot_time"
+ATTR_DEVICE_CLASS = "device_class"
+ATTR_ICON = "icon"
+ATTR_LABEL = "label"
+ATTR_LOAD = "load"
+ATTR_UNIT = "unit"
+ATTR_BOOT_TIME = "boot_time"
+
+ROUTER_DEFAULT_HOST = "admin.vilfo.com"
+ROUTER_DEFAULT_MODEL = "Vilfo Router"
+ROUTER_DEFAULT_NAME = "Vilfo Router"
+ROUTER_MANUFACTURER = "Vilfo AB"
+
+UNIT_PERCENT = "%"
+
+SENSOR_TYPES = {
+    ATTR_LOAD: {
+        ATTR_LABEL: "Load",
+        ATTR_UNIT: UNIT_PERCENT,
+        ATTR_ICON: "mdi:memory",
+        ATTR_API_DATA_FIELD: ATTR_API_DATA_FIELD_LOAD,
+    },
+    ATTR_BOOT_TIME: {
+        ATTR_LABEL: "Boot time",
+        ATTR_ICON: "mdi:timer",
+        ATTR_API_DATA_FIELD: ATTR_API_DATA_FIELD_BOOT_TIME,
+        ATTR_DEVICE_CLASS: DEVICE_CLASS_TIMESTAMP,
+    },
+}
diff --git a/homeassistant/components/vilfo/manifest.json b/homeassistant/components/vilfo/manifest.json
new file mode 100644
index 00000000000..cedb485fab3
--- /dev/null
+++ b/homeassistant/components/vilfo/manifest.json
@@ -0,0 +1,9 @@
+{
+  "domain": "vilfo",
+  "name": "Vilfo Router",
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/vilfo",
+  "requirements": ["vilfo-api-client==0.3.2"],
+  "dependencies": [],
+  "codeowners": ["@ManneW"]
+}
diff --git a/homeassistant/components/vilfo/sensor.py b/homeassistant/components/vilfo/sensor.py
new file mode 100644
index 00000000000..e2909647c2d
--- /dev/null
+++ b/homeassistant/components/vilfo/sensor.py
@@ -0,0 +1,94 @@
+"""Support for Vilfo Router sensors."""
+from homeassistant.helpers.entity import Entity
+
+from .const import (
+    ATTR_API_DATA_FIELD,
+    ATTR_DEVICE_CLASS,
+    ATTR_ICON,
+    ATTR_LABEL,
+    ATTR_UNIT,
+    DOMAIN,
+    ROUTER_DEFAULT_MODEL,
+    ROUTER_DEFAULT_NAME,
+    ROUTER_MANUFACTURER,
+    SENSOR_TYPES,
+)
+
+
+async def async_setup_entry(hass, config_entry, async_add_entities):
+    """Add Vilfo Router entities from a config_entry."""
+    vilfo = hass.data[DOMAIN][config_entry.entry_id]
+
+    sensors = []
+
+    for sensor_type in SENSOR_TYPES:
+        sensors.append(VilfoRouterSensor(sensor_type, vilfo))
+
+    async_add_entities(sensors, True)
+
+
+class VilfoRouterSensor(Entity):
+    """Define a Vilfo Router Sensor."""
+
+    def __init__(self, sensor_type, api):
+        """Initialize."""
+        self.api = api
+        self.sensor_type = sensor_type
+        self._device_info = {
+            "identifiers": {(DOMAIN, api.host, api.mac_address)},
+            "name": ROUTER_DEFAULT_NAME,
+            "manufacturer": ROUTER_MANUFACTURER,
+            "model": ROUTER_DEFAULT_MODEL,
+            "sw_version": api.firmware_version,
+        }
+        self._unique_id = f"{self.api.unique_id}_{self.sensor_type}"
+        self._state = None
+
+    @property
+    def available(self):
+        """Return whether the sensor is available or not."""
+        return self.api.available
+
+    @property
+    def device_info(self):
+        """Return the device info."""
+        return self._device_info
+
+    @property
+    def device_class(self):
+        """Return the device class."""
+        return SENSOR_TYPES[self.sensor_type].get(ATTR_DEVICE_CLASS)
+
+    @property
+    def icon(self):
+        """Return the icon for the sensor."""
+        return SENSOR_TYPES[self.sensor_type][ATTR_ICON]
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        parent_device_name = self._device_info["name"]
+        sensor_name = SENSOR_TYPES[self.sensor_type][ATTR_LABEL]
+        return f"{parent_device_name} {sensor_name}"
+
+    @property
+    def state(self):
+        """Return the state."""
+        return self._state
+
+    @property
+    def unique_id(self):
+        """Return a unique_id for this entity."""
+        return self._unique_id
+
+    @property
+    def unit_of_measurement(self):
+        """Return the unit of measurement of this entity."""
+        return SENSOR_TYPES[self.sensor_type].get(ATTR_UNIT)
+
+    async def async_update(self):
+        """Update the router data."""
+        await self.api.async_update()
+        self._state = self.api.data.get(
+            SENSOR_TYPES[self.sensor_type][ATTR_API_DATA_FIELD]
+        )
diff --git a/homeassistant/components/vilfo/strings.json b/homeassistant/components/vilfo/strings.json
new file mode 100644
index 00000000000..e7a55c55f1f
--- /dev/null
+++ b/homeassistant/components/vilfo/strings.json
@@ -0,0 +1,23 @@
+{
+  "config": {
+    "title": "Vilfo Router",
+    "step": {
+      "user": {
+        "title": "Connect to the Vilfo Router",
+        "description": "Set up the Vilfo Router integration. You need your Vilfo Router hostname/IP and an API access token. For additional information on this integration and how to get those details, visit: https://www.home-assistant.io/integrations/vilfo",
+        "data": {
+          "host": "Router hostname or IP",
+          "access_token": "Access token for the Vilfo Router API"
+        }
+      }
+    },
+    "error": {
+      "cannot_connect": "Failed to connect. Please check the information you provided and try again.",
+      "invalid_auth": "Invalid authentication. Please check the access token and try again.",
+      "unknown": "An unexpected error occurred while setting up the integration."
+    },
+    "abort": {
+      "already_configured": "This Vilfo Router is already configured."
+    }
+  }
+}
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index 4c5449d5b2a..39a9bccf607 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -101,6 +101,7 @@ FLOWS = [
     "upnp",
     "velbus",
     "vesync",
+    "vilfo",
     "vizio",
     "wemo",
     "withings",
diff --git a/requirements_all.txt b/requirements_all.txt
index 0dac9a0b481..303fe886716 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2032,6 +2032,9 @@ venstarcolortouch==0.12
 # homeassistant.components.meteo_france
 vigilancemeteo==3.0.0
 
+# homeassistant.components.vilfo
+vilfo-api-client==0.3.2
+
 # homeassistant.components.volkszaehler
 volkszaehler==0.1.2
 
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index da710af4722..890bd1e96e9 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -688,6 +688,9 @@ uvcclient==0.11.0
 # homeassistant.components.meteo_france
 vigilancemeteo==3.0.0
 
+# homeassistant.components.vilfo
+vilfo-api-client==0.3.2
+
 # homeassistant.components.verisure
 vsure==1.5.4
 
diff --git a/tests/components/vilfo/__init__.py b/tests/components/vilfo/__init__.py
new file mode 100644
index 00000000000..680b556fc12
--- /dev/null
+++ b/tests/components/vilfo/__init__.py
@@ -0,0 +1 @@
+"""Tests for the Vilfo Router integration."""
diff --git a/tests/components/vilfo/test_config_flow.py b/tests/components/vilfo/test_config_flow.py
new file mode 100644
index 00000000000..d73d15df8dd
--- /dev/null
+++ b/tests/components/vilfo/test_config_flow.py
@@ -0,0 +1,184 @@
+"""Test the Vilfo Router config flow."""
+from unittest.mock import patch
+
+import vilfo
+
+from homeassistant import config_entries, data_entry_flow, setup
+from homeassistant.components.vilfo.const import DOMAIN
+from homeassistant.const import CONF_ACCESS_TOKEN, CONF_HOST, CONF_ID, CONF_MAC
+
+from tests.common import mock_coro
+
+
+async def test_form(hass):
+    """Test we get the form."""
+    await setup.async_setup_component(hass, "persistent_notification", {})
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
+    assert result["errors"] == {}
+
+    with patch("vilfo.Client.ping", return_value=None), patch(
+        "vilfo.Client.get_board_information", return_value=None,
+    ), patch(
+        "homeassistant.components.vilfo.async_setup", return_value=mock_coro(True)
+    ) as mock_setup, patch(
+        "homeassistant.components.vilfo.async_setup_entry",
+        return_value=mock_coro(True),
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {CONF_HOST: "testadmin.vilfo.com", CONF_ACCESS_TOKEN: "test-token"},
+        )
+
+    assert result2["type"] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
+    assert result2["title"] == "testadmin.vilfo.com"
+    assert result2["data"] == {
+        "host": "testadmin.vilfo.com",
+        "access_token": "test-token",
+    }
+
+    await hass.async_block_till_done()
+    assert len(mock_setup.mock_calls) == 1
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_form_invalid_auth(hass):
+    """Test we handle invalid auth."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch("vilfo.Client.ping", return_value=None), patch(
+        "vilfo.Client.get_board_information",
+        side_effect=vilfo.exceptions.AuthenticationException,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {"host": "testadmin.vilfo.com", "access_token": "test-token"},
+        )
+
+    assert result2["type"] == data_entry_flow.RESULT_TYPE_FORM
+    assert result2["errors"] == {"base": "invalid_auth"}
+
+
+async def test_form_cannot_connect(hass):
+    """Test we handle cannot connect error."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch("vilfo.Client.ping", side_effect=vilfo.exceptions.VilfoException):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {"host": "testadmin.vilfo.com", "access_token": "test-token"},
+        )
+
+    assert result2["type"] == data_entry_flow.RESULT_TYPE_FORM
+    assert result2["errors"] == {"base": "cannot_connect"}
+
+    with patch("vilfo.Client.ping", side_effect=vilfo.exceptions.VilfoException):
+        result3 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {"host": "testadmin.vilfo.com", "access_token": "test-token"},
+        )
+
+    assert result3["type"] == data_entry_flow.RESULT_TYPE_FORM
+    assert result3["errors"] == {"base": "cannot_connect"}
+
+
+async def test_form_wrong_host(hass):
+    """Test we handle wrong host errors."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_USER},
+        data={"host": "this is an invalid hostname", "access_token": "test-token"},
+    )
+
+    assert result["errors"] == {"host": "wrong_host"}
+
+
+async def test_form_already_configured(hass):
+    """Test that we handle already configured exceptions appropriately."""
+    first_flow_result1 = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch("vilfo.Client.ping", return_value=None), patch(
+        "vilfo.Client.get_board_information", return_value=None,
+    ):
+        first_flow_result2 = await hass.config_entries.flow.async_configure(
+            first_flow_result1["flow_id"],
+            {CONF_HOST: "testadmin.vilfo.com", CONF_ACCESS_TOKEN: "test-token"},
+        )
+
+    second_flow_result1 = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch("vilfo.Client.ping", return_value=None), patch(
+        "vilfo.Client.get_board_information", return_value=None,
+    ):
+        second_flow_result2 = await hass.config_entries.flow.async_configure(
+            second_flow_result1["flow_id"],
+            {CONF_HOST: "testadmin.vilfo.com", CONF_ACCESS_TOKEN: "test-token"},
+        )
+
+    assert first_flow_result2["type"] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
+    assert second_flow_result2["type"] == data_entry_flow.RESULT_TYPE_ABORT
+    assert second_flow_result2["reason"] == "already_configured"
+
+
+async def test_form_unexpected_exception(hass):
+    """Test that we handle unexpected exceptions."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch("vilfo.Client.ping", side_effect=Exception):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {"host": "testadmin.vilfo.com", "access_token": "test-token"},
+        )
+
+    assert result2["errors"] == {"base": "unknown"}
+
+
+async def test_validate_input_returns_data(hass):
+    """Test we handle the MAC address being resolved or not."""
+    mock_data = {"host": "testadmin.vilfo.com", "access_token": "test-token"}
+    mock_data_with_ip = {"host": "192.168.0.1", "access_token": "test-token"}
+    mock_mac = "FF-00-00-00-00-00"
+
+    with patch("vilfo.Client.ping", return_value=None), patch(
+        "vilfo.Client.get_board_information", return_value=None
+    ):
+        result = await hass.components.vilfo.config_flow.validate_input(
+            hass, data=mock_data
+        )
+
+    assert result["title"] == mock_data["host"]
+    assert result[CONF_HOST] == mock_data["host"]
+    assert result[CONF_MAC] is None
+    assert result[CONF_ID] == mock_data["host"]
+
+    with patch("vilfo.Client.ping", return_value=None), patch(
+        "vilfo.Client.get_board_information", return_value=None
+    ), patch("vilfo.Client.resolve_mac_address", return_value=mock_mac):
+        result2 = await hass.components.vilfo.config_flow.validate_input(
+            hass, data=mock_data
+        )
+        result3 = await hass.components.vilfo.config_flow.validate_input(
+            hass, data=mock_data_with_ip
+        )
+
+    assert result2["title"] == mock_data["host"]
+    assert result2[CONF_HOST] == mock_data["host"]
+    assert result2[CONF_MAC] == mock_mac
+    assert result2[CONF_ID] == mock_mac
+
+    assert result3["title"] == mock_data_with_ip["host"]
+    assert result3[CONF_HOST] == mock_data_with_ip["host"]
+    assert result3[CONF_MAC] == mock_mac
+    assert result3[CONF_ID] == mock_mac