+ def GetMasterNetmask(self):
+ """Get the master netmask.
+
+ """
+ try:
+ return self._ReadFile(constants.SS_MASTER_NETMASK)
+ except errors.ConfigurationError:
+ family = self.GetPrimaryIPFamily()
+ ipcls = netutils.IPAddress.GetClassFromIpFamily(family)
+ return ipcls.iplen
+