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   MSGID: 273.ipv6@1:103/705 2cae3190   
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     Re: Serving IPV6 from a remote host   
     By: Nigel Reed to Fidonet.IPV6 on Tue Jan 07 2025 01:10 am   
      
   I've played around with Wireguard quite a bit. I'm definitely not a total   
   expert on it or IPv6 but do have IPv6 working on my home network.   
      
   During my initial foray into Wireguard, I found that for IPv4, Wireguard   
   doesn't work on Layer 2 where the broadcasts that DHCP needs would exist. IPv6   
   replaced broadcasts with multicast, which are still Layer 2 and most of the   
   autoconfiguration of IPv6 relies on it, including RA/RS messages, SLAAC and   
   DHCPv6.   
   So I *think* you can make a Wireguard tunnel with IPv4 on the outside and 2   
   interfaces with IPv6 on the inside, you'll just have to assign the "inside"   
   wgX addresses manually. E.g. fd77::1/64 and fd77::2/64. You might need to add   
   fe80:: addresses manually as well.   
      
   OpenVPN does work on Layer 2 if you use tap mode (Wireguard is like OpenVPN in   
   tun mode), and DHCPv4 will definitely cross it if you have the tap junctioned   
   into a bridge that a physical NIC is part of. I got a Windows file share   
   working over an Internet connection with it once. I haven't played with IPv6   
   over OpenVPN yet.   
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