diff --git a/linkcheck/dns/resolver.py b/linkcheck/dns/resolver.py
index a26a0445..45726785 100644
--- a/linkcheck/dns/resolver.py
+++ b/linkcheck/dns/resolver.py
@@ -393,8 +393,8 @@ class Resolver(object):
             return []
         from linkcheck.network import IfConfig
         ifc = IfConfig()
-        return [ifc.getAddr(iface) for iface in ifc.getInterfaceList() \
-                if ifc.isUp(iface)]
+        return [ifc.getAddr(iface)
+                for iface in ifc.getInterfaceList(flags=IfConfig.IFF_UP)]
 
     def add_addrinfo (self, host, interface=False):
         try:
diff --git a/linkcheck/network/__init__.py b/linkcheck/network/__init__.py
index 935fdd89..c9fa4813 100644
--- a/linkcheck/network/__init__.py
+++ b/linkcheck/network/__init__.py
@@ -64,7 +64,7 @@ class IfConfig (object):
             return None
         return socket.inet_ntoa(result[20:24])
 
-    def getInterfaceList (self):
+    def getInterfaceList (self, flags=0):
         """Get all interface names in a list."""
         if sys.platform == 'darwin':
             command = ['ifconfig', '-l']
@@ -100,6 +100,8 @@ class IfConfig (object):
             name = struct.unpack("16s%ds" % (self.ifr_size-16), ifconf)[0]
             name = name.split('\0', 1)[0]
             if name:
+                if flags and not (self.getFlags(name) & flags):
+                    continue
                 iflist.append(name)
             i += self.ifr_size
         return iflist