REPLY: 2:5001/100.1 60da3a63   
   MSGID: 2:5005/49 60db32d7   
   CHRS: CP866 2   
   TZUTC: 0700   
   TID: hpt/fbsd 1.9.0-cur 2019-12-05   
   Dear Dmitry,   
      
   29 Jun 21 00:08, you wrote to me:   
      
    VS>> What if I had two IPv6-capable ISPs for my home, and a /64 or a   
    VS>> /56 from each of them? Is it possible to setup a backup link this   
    VS>> way?   
      
    DP> Sure.   
      
   I'm not so sure already.   
      
    VS>> I know that my home router can advertise multiple global IPv6   
    VS>> prefixes into the LAN, but how will LAN hosts failover to the   
    VS>> backup gateway if the primary ISP fails? They will have IPv6   
    VS>> addresses from both blocks, which should they choose for their   
    VS>> outgoing src address?   
      
    DP> NPTv6 is the answer (RFC 6296).   
      
   It's not a good answer. One of the key priorities of IPv6 as touted by its   
   proponents is the end-to-end connectivity, freedom from NAT.   
      
    DP> Not sure if your router can handle it.   
      
   Do not want :-)   
      
   Victor Sudakov, VAS4-RIPE, VAS47-RIPN   
   --- GoldED+/BSD 1.1.5-b20170303-b20170303   
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