Hi Michiel.   
      
    MV> Confusing...   
      
   And how about this fido4to6.vlist.eu gateway, I think it will also show a fake   
   ipv6 address in your binkd.   
      
    fido4to6.vlist.eu is an alias for de8.portmap64.net.   
    de8.portmap64.net has address 84.200.67.208   
      
   Just polled you with ipv4. What do you see?   
      
    16:55 [2260] BEGIN, binkd/1.1a-96/CYGWIN_NT-6.1 -p -P 2:280/5555 b   
    16:55 [2260] creating a poll for 2:280/5555@fidonet (`d' flavour)   
    16:55 [2260] clientmgr started   
    16:55 [8764] call to 2:280/5555@fidonet   
    16:55 [8764] trying f5555.n280.z2.binkp.net [84.200.67.208]...   
    16:55 [8764] connected   
    16:55 [8764] outgoing session with f5555.n280.z2.binkp.net:24554 [   
    16:55 [8764] OPT CRAM-MD5-5a8fd809d4f45e9cd776324ebe9592ee   
    16:55 [8764] Remote requests MD mode   
    16:55 [8764] SYS Blijf Tonijn   
    16:55 [8764] ZYZ Michiel van der Vlist   
    16:55 [8764] LOC Driebergen, NL   
    16:55 [8764] NDL CM,MO,IBN:fido.vlist.eu,RPK,NPK,ENC,NC,PING,IPv6   
    16:55 [8764] TIME Mon,  1 Jan 2018 15:55:24 +0100   
    16:55 [8764] VER binkd/1.1a-95/Win32 binkp/1.1   
    16:55 [8764] addr: 2:280/5555@fidonet   
    16:55 [8764] addr: 2:28/0@fidonet   
    16:55 [8764] addr: 2:2/20@fidonet   
    16:55 [8764] OPT EXTCMD GZ   
    16:55 [8764] Remote supports EXTCMD mode   
    16:55 [8764] Remote supports GZ mode   
    16:55 [8764] done (to 2:280/5555@fidonet, OK, S/R: 0/0 (0/0 bytes)   
    16:55 [8764] session closed, quitting...   
    16:55 [2260] rc(8764)=0   
    16:55 [2260] the queue is empty, quitting...   
      
   'Tommi   
      
   ---   
    * Origin: IPv6 Point at [2001:470:1f15:cb0:2:221:1:1] (2:221/1.1)