TID: FMail-W32 2.1.3.7-B20170919   
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   TZUTC: 0100   
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   MSGID: 2:280/5555 61e6bdf3   
   REPLY: 2:5020/545 61e49235   
   Hello Alexey,   
      
   On Monday January 17 2022 00:38, you wrote to Richard Menedetter:   
      
    RM>> Sure ... I agree. My reply was more from the ISP point of view.   
    RM>> With 1 v6 subnet it is easy, you just announce the subnet.   
      
    AV> No: when you need to provide the customer with IPv6, you assign one   
    AV> fixed address for a link, and route a /64 subnet through that address.   
      
    AV> Plastic routers (those sold for 20 EUR) deal with this setup just   
    AV> fine.   
      
   My provider issued "plastic box" already uses three subnets all by itself. The   
   first subnet is routed to the local LAN. (WiFi + wired). The second subnet is   
   rserverd for the private guest network. (WiFi only). The third subnet is for   
   the providers own guest network. (WiFi only).   
      
   The box supports pefix delegation, so I can connect another router and have   
   more subnets routed to that router.   
      
    RM>> If you allow more, you need a way to configure them. (eg. VLANs,   
    RM>> different subnet on different LAN port, etc.)   
      
    AV> Or simply route more /64 subnets through that address. Or /56 at once.   
      
   My provider gives me a /56 routed through that "plastic box".   
      
    RM>> That is added complexity for a low cost product, where most of   
    RM>> your residential customers will have no clue what this is all   
    RM>> about. So it makes more sense to offer that on higher tier (and   
    RM>> more expensive) services.   
      
    AV> That violates the KISS principle.   
      
   Indeed. It is easier to just give every customer a /56. And just route the   
   first /64 to the LAN, so that the user need not configure anything if he only   
   needs one /64. And the provider does not need to configure anything if the   
   customer needs more.   
      
      
   Cheers, Michiel   
   --- GoldED+/W32-MSVC 1.1.5-b20170303   
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