Hello Tony,   
      
   On Tuesday January 30 2018 09:24, you wrote to me:   
      
    MvV>> As it is, outgoing IPv6 is more usefull. You need that to   
    MvV>> connect to nodes that no longer have IPv4 incoming capability.   
    MvV>> Those will come...   
      
    TL> The setup of my network makes it more likely that I could become   
    TL> temporarily IPv6 only (incoming and outgoing), because my BBS IPv4   
    TL> addresses come via an OpenVPN tunnel, while IPv6 is native.   
      
   So, let me get this straight. You have a native IPv6 connection with your ISP   
   and your IPv4 connection is via a tunnel. The reverse of what I have been   
   doing with my 6in4 he.net tunnel that I used before I got native IPv6 from my   
   ISP. Right?   
      
   So when that tunnel folds, you no longer have IPv4 incoming on the advertised   
   addresses. Right?   
      
    TL> So IPv6 outgoing only can be useful for getting in contact with me if   
    TL> things break.   
      
   Right.   
      
    TL> Same for incoming only, because I would lost all IPv6 connectivity in   
    TL> this situation.   
      
   s/IPv6/IPv4/ ?   
      
   But... your basic connection is not really IPv6 only is it? If it is you would   
   be rather unique. AFAIK, no end user has an IPv6 only connection yet. It is   
   either Dual Satck or DS-Lite. In either case you still have outgoing IPv4   
   capabiity. No?   
      
      
   Cheers, Michiel   
      
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