diff --git a/py25/bacpypes/bvllservice.py b/py25/bacpypes/bvllservice.py
index 5713976c..42b87b26 100755
--- a/py25/bacpypes/bvllservice.py
+++ b/py25/bacpypes/bvllservice.py
@@ -72,10 +72,15 @@ def __init__(self, addr=None, noBroadcast=False):
             else:
                 self.address = Address(addr)
 
-            # check for a special broadcast address
+            # promote the normal and broadcast tuples
             self.addrTuple = self.address.addrTuple
             self.addrBroadcastTuple = self.address.addrBroadcastTuple
-            if (self.addrTuple == self.addrBroadcastTuple):
+
+            # check for no broadcasting (loopback interface)
+            if not self.addrBroadcastTuple:
+                noBroadcast = True
+            elif (self.addrTuple == self.addrBroadcastTuple):
+                # old school broadcast address
                 self.addrBroadcastTuple = ('255.255.255.255', self.addrTuple[1])
             else:
                 specialBroadcast = True
@@ -117,9 +122,15 @@ def indication(self, server, pdu):
         if pdu.pduDestination.addrType == Address.localBroadcastAddr:
             dest = self.addrBroadcastTuple
             if _debug: UDPMultiplexer._debug("    - requesting local broadcast: %r", dest)
+
+            # interface might not support broadcasts
+            if not dest:
+                return
+
         elif pdu.pduDestination.addrType == Address.localStationAddr:
             dest = unpack_ip_addr(pdu.pduDestination.addrAddr)
             if _debug: UDPMultiplexer._debug("    - requesting local station: %r", dest)
+
         else:
             raise RuntimeError("invalid destination address type")
 
diff --git a/py27/bacpypes/bvllservice.py b/py27/bacpypes/bvllservice.py
index 8fc67fce..f4b6006c 100755
--- a/py27/bacpypes/bvllservice.py
+++ b/py27/bacpypes/bvllservice.py
@@ -73,10 +73,15 @@ def __init__(self, addr=None, noBroadcast=False):
             else:
                 self.address = Address(addr)
 
-            # check for a special broadcast address
+            # promote the normal and broadcast tuples
             self.addrTuple = self.address.addrTuple
             self.addrBroadcastTuple = self.address.addrBroadcastTuple
-            if (self.addrTuple == self.addrBroadcastTuple):
+
+            # check for no broadcasting (loopback interface)
+            if not self.addrBroadcastTuple:
+                noBroadcast = True
+            elif (self.addrTuple == self.addrBroadcastTuple):
+                # old school broadcast address
                 self.addrBroadcastTuple = ('255.255.255.255', self.addrTuple[1])
             else:
                 specialBroadcast = True
@@ -118,9 +123,15 @@ def indication(self, server, pdu):
         if pdu.pduDestination.addrType == Address.localBroadcastAddr:
             dest = self.addrBroadcastTuple
             if _debug: UDPMultiplexer._debug("    - requesting local broadcast: %r", dest)
+
+            # interface might not support broadcasts
+            if not dest:
+                return
+
         elif pdu.pduDestination.addrType == Address.localStationAddr:
             dest = unpack_ip_addr(pdu.pduDestination.addrAddr)
             if _debug: UDPMultiplexer._debug("    - requesting local station: %r", dest)
+
         else:
             raise RuntimeError("invalid destination address type")
 
diff --git a/py34/bacpypes/bvllservice.py b/py34/bacpypes/bvllservice.py
index 087b88df..ca1903db 100755
--- a/py34/bacpypes/bvllservice.py
+++ b/py34/bacpypes/bvllservice.py
@@ -73,10 +73,15 @@ def __init__(self, addr=None, noBroadcast=False):
             else:
                 self.address = Address(addr)
 
-            # check for a special broadcast address
+            # promote the normal and broadcast tuples
             self.addrTuple = self.address.addrTuple
             self.addrBroadcastTuple = self.address.addrBroadcastTuple
-            if (self.addrTuple == self.addrBroadcastTuple):
+
+            # check for no broadcasting (loopback interface)
+            if not self.addrBroadcastTuple:
+                noBroadcast = True
+            elif (self.addrTuple == self.addrBroadcastTuple):
+                # old school broadcast address
                 self.addrBroadcastTuple = ('255.255.255.255', self.addrTuple[1])
             else:
                 specialBroadcast = True
@@ -98,6 +103,7 @@ def __init__(self, addr=None, noBroadcast=False):
             bind(self.direct, self.broadcastPort)
         else:
             self.broadcast = None
+
         # create and bind the Annex H and J servers
         self.annexH = _MultiplexServer(self)
         self.annexJ = _MultiplexServer(self)
@@ -117,9 +123,15 @@ def indication(self, server, pdu):
         if pdu.pduDestination.addrType == Address.localBroadcastAddr:
             dest = self.addrBroadcastTuple
             if _debug: UDPMultiplexer._debug("    - requesting local broadcast: %r", dest)
+
+            # interface might not support broadcasts
+            if not dest:
+                return
+
         elif pdu.pduDestination.addrType == Address.localStationAddr:
             dest = pdu.pduDestination.addrTuple
             if _debug: UDPMultiplexer._debug("    - requesting local station: %r", dest)
+
         else:
             raise RuntimeError("invalid destination address type")