Hello Janne!   
      
   Mar 19 09:59 2018, Janne Johansson wrote to Michiel van der Vlist:   
      
    JJ> I think there was some ndp exhaustion attack where you were advised    
    JJ> to use something like /120 for link nets (not using SLAAC there of    
    JJ> course) in order for routers to not have to keep huge NDP tables for    
    JJ> that link, so in that sense most software should be able to think in    
    JJ> smaller than /64 nets and now, also for dynamic client configuration    
    JJ> on obsd.   
      
   The ND exhaustion attack would be only possible for a directly connected   
   network, e.g. a LAN. A xfer network for a link between routers isn't affected   
   because ND should only accept local packets. Anyway, there are several   
   solutions to limit/mitigate the problem for a LAN router.   
      
   ciao,   
   Markus   
      
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