Convert mac addresses to lower case wherever relevant

neighbors.py

@@ -47,11 +47,12 @@ class NeighborCache(object):
             if router not in addresses:
                 for n in neighbors:
                     if n.get_attr('NDA_DST') == router:
-                        self.blacklist_mac.add(n.get_attr('NDA_LLADDR'))
+                        self.blacklist_mac.add(n.get_attr('NDA_LLADDR').lower())
         for np in neighbors:
             self.process_event(np)
 
     def get_ipaddress_from_mac(self, mac, addrtype):
+        mac = mac.lower()
         try:
             return self.etcd_client.get(etcd_key(mac, addrtype)).value
         except etcd.EtcdError as ex:
@@ -76,9 +77,11 @@ class NeighborCache(object):
         return None
 
     def add_pair(self, mac, ipaddress, addrtype):
+        mac = mac.lower()
         self.etcd_client.testandset(etcd_key(mac, addrtype), "", ipaddress)
 
     def new(self, mac, ipaddr, addrtype):
+        mac = mac.lower()
         old_address = self.get_ipaddress_from_mac(mac, addrtype)
 
         if not old_address is None:
@@ -100,6 +103,7 @@ class NeighborCache(object):
             self.add_pair(mac, ipaddr, addrtype)
 
     def remove(self, mac, ipaddress, addrtype):
+        mac = mac.lower()
         self.etcd_client.delete(etcd_key(mac, addrtype))
 
     def process_event(self, np):