diff --git a/imcpy/network/utils.py b/imcpy/network/utils.py
index fcea310..3cdba07 100644
--- a/imcpy/network/utils.py
+++ b/imcpy/network/utils.py
@@ -1,23 +1,18 @@
-import netifaces
+import ifaddr
+from typing import List, Tuple
 
-
-def get_interfaces(ignore_local=True):
-    """
-    Retrieves the address of all external interfaces (lo 127.0.0.1 ignored)
-    :return: List of tuples (interface, addr)
-    """
-    interfaces = netifaces.interfaces()
-    if_ext = []
-    for i in interfaces:
-        if i == 'lo' and ignore_local:
-            continue
-        iface = netifaces.ifaddresses(i).get(netifaces.AF_INET)
-        if iface:
-            for j in iface:
-                if_ext.append((i, j['addr'], j['netmask']))
-
-    return if_ext
+def get_interfaces(ignore_local=True, only_ipv4=True) -> List[Tuple[str, str, int]]:
+    ifaces = []
+    for adapter in ifaddr.get_adapters():
+        if adapter.name != 'lo' or not ignore_local:
+            for ip in adapter.ips:
+                if type(ip.ip) is str or not only_ipv4:
+                    ifaces.append((adapter.name, ip.ip, ip.network_prefix))
+    
+    return ifaces
 
 
 if __name__ == '__main__':
-    pass
\ No newline at end of file
+    pass
+
+    
\ No newline at end of file
diff --git a/imcpy/node.py b/imcpy/node.py
index 1ef1d19..7c8569c 100644
--- a/imcpy/node.py
+++ b/imcpy/node.py
@@ -2,7 +2,7 @@
 import ipaddress as ip
 from urllib.parse import urlparse
 import time
-from typing import Dict
+from typing import Dict, List, Optional
 
 from imcpy.network.udp import IMCSenderUDP
 from imcpy.network.utils import get_interfaces
@@ -69,7 +69,7 @@ def __init__(self, src, sys_name, service_filter=None, is_fixed=False):
         # Unparsed services string
         self.services_string = ''  # type: str
         # Parsed services
-        self.services = {}  # type: Dict[str, IMCService]
+        self.services = {}  # type: Dict[str, List[IMCService]]
         # Parsed entities
         self.entities = {}  # type: Dict[str, int]
         # Node arguments
@@ -82,9 +82,9 @@ def __init__(self, src, sys_name, service_filter=None, is_fixed=False):
         #
 
         # Time of last heartbeat
-        self.t_last_heartbeat = None  # type: float
+        self.t_last_heartbeat = None  # type: Optional[float]
         # Time of last announce
-        self.t_last_announce = None  # type: float
+        self.t_last_announce = None  # type: Optional[float]
 
     @property
     def name(self):
@@ -153,7 +153,7 @@ def send(self, msg, log_fh=None):
 
         # Determine which service to send to based on ip/netmask
         # Note: this might not account for funky ip routing
-        networks = [ip.ip_interface(x[1] + '/' + x[2]).network for x in get_interfaces(ignore_local=True)]
+        networks = [ip.IPv4Network((addr, mask), strict=False) for name, addr, mask in get_interfaces(ignore_local=True, only_ipv4=True)]
         for svc in imcudp_services:
             svc_ip = ip.ip_address(svc.ip)
 
diff --git a/setup.py b/setup.py
index fc51cde..98504fc 100644
--- a/setup.py
+++ b/setup.py
@@ -153,7 +153,7 @@ def build_extension(self, ext):
                   'imcpy.network',
                   'utils'],
         python_requires='>=3.6',
-        install_requires=['netifaces'],
+        install_requires=['ifaddr'],
         extras_require={'LSFExporter': ['pandas']},
         package_data={'': ['_imcpy.pyi'],
                       'imcpy.coordinates': ['*.pyi'],