--- /usr/lib/python-exec/python2.7/policyd-spf.orig	2014-02-25 11:43:15.000000000 +0100
+++ /usr/lib/python-exec/python2.7/policyd-spf	2014-02-25 11:42:45.213324487 +0100
@@ -43,6 +43,11 @@
 syslog.openlog(os.path.basename(sys.argv[0]), syslog.LOG_PID, syslog.LOG_MAIL)
 policydspfsupp._setExceptHook()
 
+from struct import unpack as struct_unpack                                                                                                                 
+from socket import inet_ntoa, inet_aton                                                                                                                    
+def addr2bin(addr):                                                                                                                                        
+    return struct_unpack('!l', inet_aton(addr))[0]                                                                                                         
+
 #############################################
 def _cidrmatch(connectip, ipaddrs, n):
     """Match connect IP against a list of other IP addresses. From pyspf."""
@@ -56,7 +61,7 @@
             bin = spf.bin2long6
         else:
             MASK = 0xFFFFFFFF
-            bin = spf.addr2bin
+            bin = addr2bin
         c = ~(MASK >> n) & MASK & bin(connectip)
         for ip in [bin(ip) for ip in ipaddrs]:
             if c == ~(MASK >> n) & MASK & ip: return True