diff --git a/custom_components/mikrotik_router/librouteros_custom/__init__.py b/custom_components/mikrotik_router/librouteros_custom/__init__.py
new file mode 100644
index 0000000..b345228
--- /dev/null
+++ b/custom_components/mikrotik_router/librouteros_custom/__init__.py
@@ -0,0 +1,60 @@
+# -*- coding: UTF-8 -*-
+
+from socket import create_connection
+from collections import ChainMap
+
+from .exceptions import (
+    ConnectionClosed,
+    FatalError,
+)
+from .connections import SocketTransport
+from .protocol import ApiProtocol
+from .login import (
+    plain,
+    token,
+)
+from .api import Api
+
+DEFAULTS = {
+    'timeout': 10,
+    'port': 8728,
+    'saddr': '',
+    'subclass': Api,
+    'encoding': 'ASCII',
+    'ssl_wrapper': lambda sock: sock,
+    'login_method': plain,
+}
+
+
+def connect(host, username, password, **kwargs):
+    """
+    Connect and login to routeros device.
+    Upon success return a Api class.
+
+    :param host: Hostname to connecto to. May be ipv4,ipv6,FQDN.
+    :param username: Username to login with.
+    :param password: Password to login with. Only ASCII characters allowed.
+    :param timeout: Socket timeout. Defaults to 10.
+    :param port: Destination port to be used. Defaults to 8728.
+    :param saddr: Source address to bind to.
+    :param subclass: Subclass of Api class. Defaults to Api class from library.
+    :param ssl_wrapper: Callable (e.g. ssl.SSLContext instance) to wrap socket with.
+    :param login_method: Callable with login method.
+    """
+    arguments = ChainMap(kwargs, DEFAULTS)
+    transport = create_transport(host, **arguments)
+    protocol = ApiProtocol(transport=transport, encoding=arguments['encoding'])
+    api = arguments['subclass'](protocol=protocol)
+
+    try:
+        arguments['login_method'](api=api, username=username, password=password)
+        return api
+    except (ConnectionClosed, FatalError):
+        transport.close()
+        raise
+
+
+def create_transport(host, **kwargs):
+    sock = create_connection((host, kwargs['port']), kwargs['timeout'], (kwargs['saddr'], 0))
+    sock = kwargs['ssl_wrapper'](sock)
+    return SocketTransport(sock=sock)
diff --git a/custom_components/mikrotik_router/librouteros_custom/api.py b/custom_components/mikrotik_router/librouteros_custom/api.py
new file mode 100644
index 0000000..e8c4a17
--- /dev/null
+++ b/custom_components/mikrotik_router/librouteros_custom/api.py
@@ -0,0 +1,136 @@
+# -*- coding: UTF-8 -*-
+
+from posixpath import join as pjoin
+
+from .exceptions import TrapError, MultiTrapError
+from .protocol import (
+    compose_word,
+    parse_word,
+)
+from .query import Query
+
+
+class Api:
+
+    def __init__(self, protocol):
+        self.protocol = protocol
+
+    def __call__(self, cmd, **kwargs):
+        """
+        Call Api with given command.
+        Yield each row.
+
+        :param cmd: Command word. eg. /ip/address/print
+        :param kwargs: Dictionary with optional arguments.
+        """
+        words = (compose_word(key, value) for key, value in kwargs.items())
+        self.protocol.writeSentence(cmd, *words)
+        yield from self.readResponse()
+
+    def rawCmd(self, cmd, *words):
+        """
+        Call Api with given command and raw words.
+        End user is responsible to properly format each api word argument.
+        :param cmd: Command word. eg. /ip/address/print
+        :param args: Iterable with optional plain api arguments.
+        """
+        self.protocol.writeSentence(cmd, *words)
+        yield from self.readResponse()
+
+    def readSentence(self):
+        """
+        Read one sentence and parse words.
+
+        :returns: Reply word, dict with attribute words.
+        """
+        reply_word, words = self.protocol.readSentence()
+        words = dict(parse_word(word) for word in words)
+        return reply_word, words
+
+    def readResponse(self):
+        """
+        Yield each sentence untill !done is received.
+
+        :throws TrapError: If one !trap is received.
+        :throws MultiTrapError: If > 1 !trap is received.
+        """
+        traps = []
+        reply_word = None
+        while reply_word != '!done':
+            reply_word, words = self.readSentence()
+            if reply_word == '!trap':
+                traps.append(TrapError(**words))
+            elif reply_word in ('!re', '!done') and words:
+                yield words
+
+        if len(traps) > 1:
+            raise MultiTrapError(*traps)
+        if len(traps) == 1:
+            raise traps[0]
+
+    def close(self):
+        self.protocol.close()
+
+    def path(self, *path):
+        return Path(
+            path='',
+            api=self,
+        ).join(*path)
+
+
+class Path:
+    """Represents absolute command path."""
+
+    def __init__(self, path, api):
+        self.path = path
+        self.api = api
+
+    def select(self, key, *other):
+        keys = (key, ) + other
+        return Query(path=self, keys=keys, api=self.api)
+
+    def __str__(self):
+        return self.path
+
+    def __repr__(self):
+        return "<{module}.{cls} {path!r}>".format(
+            module=self.__class__.__module__,
+            cls=self.__class__.__name__,
+            path=self.path,
+        )
+
+    def __iter__(self):
+        yield from self('print')
+
+    def __call__(self, cmd, **kwargs):
+        yield from self.api(
+            self.join(cmd).path,
+            **kwargs,
+        )
+
+    def join(self, *path):
+        """Join current path with one or more path strings."""
+        return Path(
+            api=self.api,
+            path=pjoin('/', self.path, *path).rstrip('/'),
+        )
+
+    def remove(self, *ids):
+        ids = ','.join(ids)
+        tuple(self(
+            'remove',
+            **{'.id': ids},
+        ))
+
+    def add(self, **kwargs):
+        ret = self(
+            'add',
+            **kwargs,
+        )
+        return tuple(ret)[0]['ret']
+
+    def update(self, **kwargs):
+        tuple(self(
+            'set',
+            **kwargs,
+        ))
diff --git a/custom_components/mikrotik_router/librouteros_custom/connections.py b/custom_components/mikrotik_router/librouteros_custom/connections.py
new file mode 100644
index 0000000..40cd66b
--- /dev/null
+++ b/custom_components/mikrotik_router/librouteros_custom/connections.py
@@ -0,0 +1,37 @@
+# -*- coding: UTF-8 -*-
+
+from .exceptions import ConnectionClosed
+
+
+class SocketTransport:
+
+    def __init__(self, sock):
+        self.sock = sock
+
+    def write(self, data):
+        """
+        Write given bytes to socket. Loop as long as every byte in
+        string is written unless exception is raised.
+        """
+        self.sock.sendall(data)
+
+    def read(self, length):
+        """
+        Read as many bytes from socket as specified in length.
+        Loop as long as every byte is read unless exception is raised.
+        """
+        data = bytearray()
+        while len(data) != length:
+            tmp = None
+            try:
+                tmp = self.sock.recv((length - len(data)))
+            except:
+                raise ConnectionClosed('Socket recv failed.')
+
+            data += tmp
+            if not data:
+                raise ConnectionClosed('Connection unexpectedly closed.')
+        return data
+
+    def close(self):
+        self.sock.close()
diff --git a/custom_components/mikrotik_router/librouteros_custom/exceptions.py b/custom_components/mikrotik_router/librouteros_custom/exceptions.py
new file mode 100644
index 0000000..9eea29b
--- /dev/null
+++ b/custom_components/mikrotik_router/librouteros_custom/exceptions.py
@@ -0,0 +1,52 @@
+# -*- coding: UTF-8 -*-
+
+
+class LibRouterosError(Exception):
+    """Base exception for all other."""
+
+
+class ConnectionClosed(LibRouterosError):
+    """Raised when connection have been closed."""
+
+
+class ProtocolError(LibRouterosError):
+    """Raised when e.g. encoding/decoding fails."""
+
+
+class FatalError(ProtocolError):
+    """Exception raised when !fatal is received."""
+
+
+class TrapError(ProtocolError):
+    """
+    Exception raised when !trap is received.
+
+    :param int category: Optional integer representing category.
+    :param str message: Error message.
+    """
+
+    def __init__(self, message, category=None):
+        self.category = category
+        self.message = message
+        super().__init__()
+
+    def __str__(self):
+        return str(self.message.replace('\r\n', ','))
+
+    def __repr__(self):
+        return '{}({!r})'.format(self.__class__.__name__, str(self))
+
+
+class MultiTrapError(ProtocolError):
+    """
+    Exception raised when multiple !trap words have been received in one response.
+
+    :param traps: TrapError instances.
+    """
+
+    def __init__(self, *traps):
+        self.traps = traps
+        super().__init__()
+
+    def __str__(self):
+        return ', '.join(str(trap) for trap in self.traps)
diff --git a/custom_components/mikrotik_router/librouteros_custom/login.py b/custom_components/mikrotik_router/librouteros_custom/login.py
new file mode 100644
index 0000000..c674cac
--- /dev/null
+++ b/custom_components/mikrotik_router/librouteros_custom/login.py
@@ -0,0 +1,26 @@
+from binascii import unhexlify, hexlify
+from hashlib import md5
+
+
+def encode_password(token, password):
+    #pylint: disable=redefined-outer-name
+    token = token.encode('ascii', 'strict')
+    token = unhexlify(token)
+    password = password.encode('ascii', 'strict')
+    hasher = md5()
+    hasher.update(b'\x00' + password + token)
+    password = hexlify(hasher.digest())
+    return '00' + password.decode('ascii', 'strict')
+
+
+def token(api, username, password):
+    """Login using pre routeros 6.43 authorization method."""
+    sentence = api('/login')
+    tok = tuple(sentence)[0]['ret']
+    encoded = encode_password(tok, password)
+    tuple(api('/login', **{'name': username, 'response': encoded}))
+
+
+def plain(api, username, password):
+    """Login using post routeros 6.43 authorization method."""
+    tuple(api('/login', **{'name': username, 'password': password}))
diff --git a/custom_components/mikrotik_router/librouteros_custom/protocol.py b/custom_components/mikrotik_router/librouteros_custom/protocol.py
new file mode 100644
index 0000000..8c31a2b
--- /dev/null
+++ b/custom_components/mikrotik_router/librouteros_custom/protocol.py
@@ -0,0 +1,209 @@
+# -*- coding: UTF-8 -*-
+
+from struct import pack, unpack
+from logging import getLogger, NullHandler
+
+from .exceptions import (
+    ProtocolError,
+    FatalError,
+)
+
+LOGGER = getLogger('librouteros')
+LOGGER.addHandler(NullHandler())
+
+
+def parse_word(word):
+    """
+    Split given attribute word to key, value pair.
+
+    Values are casted to python equivalents.
+
+    :param word: API word.
+    :returns: Key, value pair.
+    """
+    mapping = {'yes': True, 'true': True, 'no': False, 'false': False}
+    _, key, value = word.split('=', 2)
+    try:
+        value = int(value)
+    except ValueError:
+        value = mapping.get(value, value)
+    return (key, value)
+
+
+def cast_to_api(value):
+    """Cast python equivalent to API."""
+    mapping = {True: 'yes', False: 'no'}
+    # this is necesary because 1 == True, 0 == False
+    if type(value) == int:
+        value = str(value)
+    else:
+        value = mapping.get(value, str(value))
+    return value
+
+
+def compose_word(key, value):
+    """
+    Create a attribute word from key, value pair.
+    Values are casted to api equivalents.
+    """
+    return '={}={}'.format(key, cast_to_api(value))
+
+
+class Encoder:
+
+    def encodeSentence(self, *words):
+        """
+        Encode given sentence in API format.
+
+        :param words: Words to endoce.
+        :returns: Encoded sentence.
+        """
+        encoded = map(self.encodeWord, words)
+        encoded = b''.join(encoded)
+        # append EOS (end of sentence) byte
+        encoded += b'\x00'
+        return encoded
+
+    def encodeWord(self, word):
+        """
+        Encode word in API format.
+
+        :param word: Word to encode.
+        :returns: Encoded word.
+        """
+        #pylint: disable=no-member
+        encoded_word = word.encode(encoding=self.encoding, errors='strict')
+        return Encoder.encodeLength(len(word)) + encoded_word
+
+    @staticmethod
+    def encodeLength(length):
+        """
+        Encode given length in mikrotik format.
+
+        :param length: Integer < 268435456.
+        :returns: Encoded length.
+        """
+        if length < 128:
+            ored_length = length
+            offset = -1
+        elif length < 16384:
+            ored_length = length | 0x8000
+            offset = -2
+        elif length < 2097152:
+            ored_length = length | 0xC00000
+            offset = -3
+        elif length < 268435456:
+            ored_length = length | 0xE0000000
+            offset = -4
+        else:
+            raise ProtocolError('Unable to encode length of {}'.format(length))
+
+        return pack('!I', ored_length)[offset:]
+
+
+class Decoder:
+
+    @staticmethod
+    def determineLength(length):
+        """
+        Given first read byte, determine how many more bytes
+        needs to be known in order to get fully encoded length.
+
+        :param length: First read byte.
+        :return: How many bytes to read.
+        """
+        integer = ord(length)
+
+        #pylint: disable=no-else-return
+        if integer < 128:
+            return 0
+        elif integer < 192:
+            return 1
+        elif integer < 224:
+            return 2
+        elif integer < 240:
+            return 3
+
+        raise ProtocolError('Unknown controll byte {}'.format(length))
+
+    @staticmethod
+    def decodeLength(length):
+        """
+        Decode length based on given bytes.
+
+        :param length: Bytes string to decode.
+        :return: Decoded length.
+        """
+        bytes_length = len(length)
+
+        if bytes_length < 2:
+            offset = b'\x00\x00\x00'
+            xor = 0
+        elif bytes_length < 3:
+            offset = b'\x00\x00'
+            xor = 0x8000
+        elif bytes_length < 4:
+            offset = b'\x00'
+            xor = 0xC00000
+        elif bytes_length < 5:
+            offset = b''
+            xor = 0xE0000000
+        else:
+            raise ProtocolError('Unable to decode length of {}'.format(length))
+
+        decoded = unpack('!I', (offset + length))[0]
+        decoded ^= xor
+        return decoded
+
+
+class ApiProtocol(Encoder, Decoder):
+
+    def __init__(self, transport, encoding):
+        self.transport = transport
+        self.encoding = encoding
+
+    @staticmethod
+    def log(direction_string, *sentence):
+        for word in sentence:
+            LOGGER.debug('{0} {1!r}'.format(direction_string, word))
+
+        LOGGER.debug('{0} EOS'.format(direction_string))
+
+    def writeSentence(self, cmd, *words):
+        """
+        Write encoded sentence.
+
+        :param cmd: Command word.
+        :param words: Aditional words.
+        """
+        encoded = self.encodeSentence(cmd, *words)
+        self.log('<---', cmd, *words)
+        self.transport.write(encoded)
+
+    def readSentence(self):
+        """
+        Read every word untill empty word (NULL byte) is received.
+
+        :return: Reply word, tuple with read words.
+        """
+        sentence = tuple(word for word in iter(self.readWord, ''))
+        self.log('--->', *sentence)
+        reply_word, words = sentence[0], sentence[1:]
+        if reply_word == '!fatal':
+            self.transport.close()
+            raise FatalError(words[0])
+        return reply_word, words
+
+    def readWord(self):
+        byte = self.transport.read(1)
+        # Early return check for null byte
+        if byte == b'\x00':
+            return ''
+        to_read = self.determineLength(byte)
+        byte += self.transport.read(to_read)
+        length = self.decodeLength(byte)
+        word = self.transport.read(length)
+        return word.decode(encoding=self.encoding, errors='strict')
+
+    def close(self):
+        self.transport.close()
diff --git a/custom_components/mikrotik_router/librouteros_custom/query.py b/custom_components/mikrotik_router/librouteros_custom/query.py
new file mode 100644
index 0000000..c3f9bf2
--- /dev/null
+++ b/custom_components/mikrotik_router/librouteros_custom/query.py
@@ -0,0 +1,64 @@
+# -*- coding: UTF-8 -*-
+from itertools import chain
+from .protocol import (
+    cast_to_api,
+)
+
+
+class Key:
+
+    def __init__(self, name):
+        self.name = name
+
+    def __eq__(self, other):
+        yield '?={}={}'.format(self, cast_to_api(other))
+
+    def __ne__(self, other):
+        yield from self == other
+        yield '?#!'
+
+    def __lt__(self, other):
+        yield '?<{}={}'.format(self, cast_to_api(other))
+
+    def __gt__(self, other):
+        yield '?>{}={}'.format(self, cast_to_api(other))
+
+    def __str__(self):
+        return str(self.name)
+
+
+class Query:
+
+    def __init__(self, path, keys, api):
+        self.path = path
+        self.keys = keys
+        self.api = api
+        self.query = tuple()
+
+    def where(self, *args):
+        self.query = tuple(chain.from_iterable(args))
+        return self
+
+    def __iter__(self):
+        keys = ','.join(str(key) for key in self.keys)
+        keys = '=.proplist={}'.format(keys)
+        cmd = str(self.path.join('print'))
+        return iter(self.api.rawCmd(cmd, keys, *self.query))
+
+
+def And(left, right, *rest):
+    #pylint: disable=invalid-name
+    yield from left
+    yield from right
+    yield from chain.from_iterable(rest)
+    yield '?#&'
+    yield from ('?#&', ) * len(rest)
+
+
+def Or(left, right, *rest):
+    #pylint: disable=invalid-name
+    yield from left
+    yield from right
+    yield from chain.from_iterable(rest)
+    yield '?#|'
+    yield from ('?#|', ) * len(rest)
diff --git a/custom_components/mikrotik_router/mikrotikapi.py b/custom_components/mikrotik_router/mikrotikapi.py
index 8639277..210afbb 100644
--- a/custom_components/mikrotik_router/mikrotikapi.py
+++ b/custom_components/mikrotik_router/mikrotikapi.py
@@ -10,7 +10,15 @@ from .const import (
     DEFAULT_ENCODING,
 )
 
-import librouteros
+import os
+import sys
+import importlib
+MODULE_PATH = os.path.join(os.path.dirname(__file__), "librouteros_custom", "__init__.py")
+MODULE_NAME = "librouteros_custom"
+spec = importlib.util.spec_from_file_location(MODULE_NAME, MODULE_PATH)
+librouteros_custom = importlib.util.module_from_spec(spec)
+sys.modules[spec.name] = librouteros_custom
+spec.loader.exec_module(librouteros_custom)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -86,15 +94,15 @@ class MikrotikAPI:
             kwargs["ssl_wrapper"] = self._ssl_wrapper
         self.lock.acquire()
         try:
-            self._connection = librouteros.connect(
+            self._connection = librouteros_custom.connect(
                 self._host, self._username, self._password, **kwargs
             )
         except (
-            librouteros.exceptions.TrapError,
-            librouteros.exceptions.MultiTrapError,
-            librouteros.exceptions.ConnectionClosed,
-            librouteros.exceptions.ProtocolError,
-            librouteros.exceptions.FatalError,
+            librouteros_custom.exceptions.TrapError,
+            librouteros_custom.exceptions.MultiTrapError,
+            librouteros_custom.exceptions.ConnectionClosed,
+            librouteros_custom.exceptions.ProtocolError,
+            librouteros_custom.exceptions.FatalError,
             ssl.SSLError,
             BrokenPipeError,
             OSError,
@@ -166,7 +174,7 @@ class MikrotikAPI:
         try:
             response = self._connection.path(path)
             _LOGGER.debug("API response (%s): %s", path, response)
-        except librouteros.exceptions.ConnectionClosed:
+        except librouteros_custom.exceptions.ConnectionClosed:
             if not self.connection_error_reported:
                 _LOGGER.error("Mikrotik %s connection closed", self._host)
                 self.connection_error_reported = True
@@ -175,10 +183,10 @@ class MikrotikAPI:
             self.lock.release()
             return None
         except (
-            librouteros.exceptions.TrapError,
-            librouteros.exceptions.MultiTrapError,
-            librouteros.exceptions.ProtocolError,
-            librouteros.exceptions.FatalError,
+            librouteros_custom.exceptions.TrapError,
+            librouteros_custom.exceptions.MultiTrapError,
+            librouteros_custom.exceptions.ProtocolError,
+            librouteros_custom.exceptions.FatalError,
             ssl.SSLError,
             BrokenPipeError,
             OSError,
@@ -202,7 +210,7 @@ class MikrotikAPI:
 
         try:
             tuple(response)
-        except librouteros.exceptions.ConnectionClosed as api_error:
+        except librouteros_custom.exceptions.ConnectionClosed as api_error:
             if not self.connection_error_reported:
                 _LOGGER.error("Mikrotik %s error while path %s", self._host, api_error)
                 self.connection_error_reported = True
@@ -252,7 +260,7 @@ class MikrotikAPI:
             self.lock.acquire()
             try:
                 response.update(**params)
-            except librouteros.exceptions.ConnectionClosed:
+            except librouteros_custom.exceptions.ConnectionClosed:
                 if not self.connection_error_reported:
                     _LOGGER.error("Mikrotik %s connection closed", self._host)
                     self.connection_error_reported = True
@@ -261,10 +269,10 @@ class MikrotikAPI:
                 self.lock.release()
                 return False
             except (
-                librouteros.exceptions.TrapError,
-                librouteros.exceptions.MultiTrapError,
-                librouteros.exceptions.ProtocolError,
-                librouteros.exceptions.FatalError,
+                librouteros_custom.exceptions.TrapError,
+                librouteros_custom.exceptions.MultiTrapError,
+                librouteros_custom.exceptions.ProtocolError,
+                librouteros_custom.exceptions.FatalError,
                 ssl.SSLError,
                 BrokenPipeError,
                 OSError,
@@ -326,7 +334,7 @@ class MikrotikAPI:
             try:
                 run = response("run", **{".id": tmp[".id"]})
                 tuple(run)
-            except librouteros.exceptions.ConnectionClosed:
+            except librouteros_custom.exceptions.ConnectionClosed:
                 if not self.connection_error_reported:
                     _LOGGER.error("Mikrotik %s connection closed", self._host)
                     self.connection_error_reported = True
@@ -335,10 +343,10 @@ class MikrotikAPI:
                 self.lock.release()
                 return False
             except (
-                librouteros.exceptions.TrapError,
-                librouteros.exceptions.MultiTrapError,
-                librouteros.exceptions.ProtocolError,
-                librouteros.exceptions.FatalError,
+                librouteros_custom.exceptions.TrapError,
+                librouteros_custom.exceptions.MultiTrapError,
+                librouteros_custom.exceptions.ProtocolError,
+                librouteros_custom.exceptions.FatalError,
                 ssl.SSLError,
                 BrokenPipeError,
                 OSError,
@@ -395,7 +403,7 @@ class MikrotikAPI:
             _LOGGER.debug(
                 "API response (%s): %s", "/interface/monitor-traffic", traffic
             )
-        except librouteros.exceptions.ConnectionClosed:
+        except librouteros_custom.exceptions.ConnectionClosed:
             if not self.connection_error_reported:
                 _LOGGER.error("Mikrotik %s connection closed", self._host)
                 self.connection_error_reported = True
@@ -404,10 +412,10 @@ class MikrotikAPI:
             self.lock.release()
             return None
         except (
-            librouteros.exceptions.TrapError,
-            librouteros.exceptions.MultiTrapError,
-            librouteros.exceptions.ProtocolError,
-            librouteros.exceptions.FatalError,
+            librouteros_custom.exceptions.TrapError,
+            librouteros_custom.exceptions.MultiTrapError,
+            librouteros_custom.exceptions.ProtocolError,
+            librouteros_custom.exceptions.FatalError,
             ssl.SSLError,
             BrokenPipeError,
             OSError,
@@ -435,7 +443,7 @@ class MikrotikAPI:
 
         try:
             tuple(response)
-        except librouteros.exceptions.ConnectionClosed as api_error:
+        except librouteros_custom.exceptions.ConnectionClosed as api_error:
             if not self.connection_error_reported:
                 _LOGGER.error(
                     "Mikrotik %s error while get_traffic %s", self._host, api_error