As an alternative to runing the AYIYA SixXS tunnel on the same system that   
   hosts my BBS I have been attempting to set up my Raspberry Pi to act as the   
   IPv6 tunnel and offer the rest of the machines on my LAN (including the BBS)   
   an IPv6 address.   
      
   I have followed the instructions in https://www.sixxs.net/wiki/Raspberry and   
   have found while my BBS system seems to now have an IPv6 address I can not   
   get a report of an open telnet port on that address :(   
      
   Here's what I currently see on the BBS machine   
      
   IPv6 Address: 2001:4428:200:816c::50, 2001:4428:200:816c:9986:b84b:9600:e71c   
   Temporary IPv6 Address: 2001:4428:200:816c:3e:1994:f43d:f326   
   Temporary IPv6 Address: fd84:dbac:4308:1d00:657f:2105:9919:44c3   
   Link-local IPv6 Address: fe80::9986:b84b:9600:e71c%10   
   IPv6 Default Gateways: fe80::ba27:ebff:fe60:17b%10, 2001:4428:200:816c::1   
   IPv6 DNS Server:    
      
   The IPv6 Gateway address starting with 2001 I added manually this is the   
   address of the Raspberry Pi at present. I also added the IPv6 address of   
   2001:4428:200:816c:50 as it seems like that address would be accepted when I   
   added a test DNS record of test.agency.bbs.geek.nz but the other 2001 address   
   was not acceptable to the DNS system - I think that's the local subnet   
   address issued by the Radvd system on the Pi?   
      
   Not being a network guru I am getting myself confused but I find I can ping   
   both 2001 addresess using http://centralops.net/co/Ping.aspx    
      
   So I think I am partially there..   
      
   I think I need to alter the Firewall rules metioned in the SixXs wiki to open   
   up port 23 and forward the traffic to the BBS system. But I am not sure of   
   the best commands to add to the ip6tables file. In the end I hope that   
   by make some changes to that file and with the changes I made of giving my   
   BBS system a fixed Ipv6 address of xxx:50 and matching DNS record ... when   
   the ip6tables is configured correctly then all should work accordingly?   
      
   If you have any suggestions etc. I'd love to hear from you.   
      
   Best, Paul   
      
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