diff --git a/classes.py b/classes.py
index 4f634a8..d528273 100644
--- a/classes.py
+++ b/classes.py
@@ -152,6 +152,9 @@ class PyLinkNetworkCore(utils.DeprecatedAttributesObject, utils.CamelCaseToSnake
                        'oper': 'o',
                        '*A': '', '*B': '', '*C': '', '*D': 'iosw'}
 
+        # Acting extbans such as +b m:n!u@h on InspIRCd
+        self.extbans_acting = {}
+
         # This max nick length starts off as the config value, but may be
         # overwritten later by the protocol module if such information is
         # received. It defaults to 30.
diff --git a/protocols/inspircd.py b/protocols/inspircd.py
index 18c63f8..08bcd68 100644
--- a/protocols/inspircd.py
+++ b/protocols/inspircd.py
@@ -410,6 +410,9 @@ class InspIRCdProtocol(TS6BaseProtocol):
         self._send_with_prefix(self.sid, 'VERSION :%s' % self.version())
         self._send_with_prefix(self.sid, 'ENDBURST')
 
+        # Extban definitions
+        self.extbans_acting = {'quiet': 'm:'}
+
     def handle_capab(self, source, command, args):
         """
         Handles the CAPAB command, used for capability negotiation with our
diff --git a/protocols/unreal.py b/protocols/unreal.py
index 4c6a99d..999bfa0 100644
--- a/protocols/unreal.py
+++ b/protocols/unreal.py
@@ -374,6 +374,9 @@ class UnrealProtocol(TS6BaseProtocol):
         f('NETINFO 1 %s %s * 0 0 0 :%s' % (self.start_ts, self.proto_ver, self.serverdata.get("netname", self.name)))
         self._send_with_prefix(self.sid, 'EOS')
 
+        # Extban definitions
+        self.extbans_acting = {'quiet': '~q:'}
+
     def handle_eos(self, numeric, command, args):
         """EOS is used to denote end of burst."""
         return {}