Fix a stupid bug that cause unexpected answer

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/fork@1505 b32b6428-25c9-4566-ad07-03861ab6144f

apps/tools/xaal/tools/isalive.py

@@ -60,8 +60,17 @@ class Scanner:
     def parse_answer(self,msg):
         if (msg.msgtype == 'notify'):
             if msg.action == 'alive':
-                if msg.source == self.addr:return #hidding myself
-                if msg.source not in self.seen:
+                # hidding myself
+                if msg.source == self.addr:
+                    return
+                #it is really for us ?
+                if self.devtype != 'any.any':
+                    if msg.devtype != self.devtype:
+                        return
+                # already seen this 
+                if msg.source in self.seen:
+                    return
+                # everything is Ok :)
                 print("%s : %s" % (msg.source,msg.devtype))
                 self.seen.append(msg.source)