Add another check for the famous Netifaces issue - Related to #3219

glances/plugins/ip/__init__.py

@@ -19,18 +19,18 @@ from glances.timer import Timer, getTimeSinceLastUpdate
 try:
     import netifaces
 except ImportError as e:
-    import_error_tag = True
+    netifaces_tag = True
     logger.warning(f"Missing Python Lib ({e}), IP plugin is disabled")
 else:
-    import_error_tag = False
+    netifaces_tag = False
 
 try:
     netifaces.default_gateway()
 except Exception:
-    import_error_tag = True
+    netifaces_tag = True
     logger.warning("Netifaces2 should be installed in your Python environment, IP plugin is disabled")
 else:
-    import_error_tag = False
+    netifaces_tag = False
 
 
 # Fields description
@@ -150,7 +150,7 @@ class IpPlugin(GlancesPluginModel):
         # Init new stats
         stats = self.get_init_value()
 
-        if self.input_method == 'local' and not import_error_tag:
+        if self.input_method == 'local' and not netifaces_tag:
             stats = self.get_stats_for_local_input(stats)
 
         elif self.input_method == 'snmp':
@@ -178,7 +178,7 @@ class IpPlugin(GlancesPluginModel):
         ret = []
 
         # Only process if stats exist and display plugin enable...
-        if not self.stats or self.is_disabled() or import_error_tag:
+        if not self.stats or self.is_disabled() or netifaces_tag:
             return ret
 
         # Build the string message

glances/ports_list.py

@@ -21,12 +21,12 @@ except ImportError:
 try:
     netifaces.gateways()
 except Exception:
-    import_error_tag = True
+    netifaces_tag = True
 else:
     logger.warning(
         "Ports plugin - Netifaces2 do not support gateways() method, port_default_gateway feature is disabled"
     )
-    import_error_tag = False
+    netifaces_tag = False
 
 
 class GlancesPortsList:

glances/servers_list_dynamic.py

@@ -14,6 +14,23 @@ import sys
 from glances.globals import BSD
 from glances.logger import logger
 
+try:
+    import netifaces
+
+    netifaces_tag = True
+except ImportError:
+    logger.warning("Servers list - Netifaces2 lib not found, active IP address not possible")
+    netifaces_tag = False
+
+try:
+    netifaces.gateways()
+except Exception:
+    netifaces_tag = True
+else:
+    logger.warning("Servers list - Netifaces2 do not support gateways() method, active IP address not possible")
+    netifaces_tag = False
+
+
 try:
     from zeroconf import ServiceBrowser, ServiceInfo, Zeroconf
     from zeroconf import __version__ as __zeroconf_version
@@ -192,10 +209,11 @@ class GlancesAutoDiscoverClient:
             if not BSD:
                 try:
                     # -B @ overwrite the dynamic IPv4 choice
-                    if zeroconf_bind_address == '0.0.0.0':
+                    if netifaces_tag and zeroconf_bind_address == '0.0.0.0':
                         zeroconf_bind_address = self.find_active_ip_address()
-                except KeyError:
+                except Exception:
                     # Issue #528 (no network interface available)
+                    # Issue #3219 (no implementation for gateway())
                     pass
 
             # Ensure zeroconf_bind_address is an IP address not an host
@@ -241,8 +259,6 @@ class GlancesAutoDiscoverClient:
     @staticmethod
     def find_active_ip_address():
         """Try to find the active IP addresses."""
-        import netifaces
-
         # Interface of the default gateway
         gateway_itf = netifaces.gateways()[netifaces.AF_INET][0][1]
         # IP address for the interface