code: def atlas_zonefile_find_push_peers( zonefile_hash, peer_table=None, zonefile_bits=None, con=None, path=None ):
      
  
      if zonefile_bits is None:
          zonefile_bits = atlasdb_get_zonefile_bits( zonefile_hash, path=path, con=con )
          if len(zonefile_bits) == 0:
              # we don't even know about it
              return []
  
      push_peers = []
      
      with AtlasPeerTableLocked(peer_table) as ptbl:
          for peer_hostport in ptbl.keys():
              zonefile_inv = atlas_peer_get_zonefile_inventory( peer_hostport, peer_table=ptbl )
              res = atlas_inventory_test_zonefile_bits( zonefile_inv, zonefile_bits )
              if res:
                  push_peers.append( peer_hostport )
  
      return push_peers
docs: Find the set of peers that do *not* have this zonefile.