Randy, Thank you very much for your clear answer :-)
>> How about inter-router ethernet links today we often use ? > > /127 is what we use. It sounds to me that you IIJ are using ethernet link as just p2p link and ask your customer use just like you. I see. Then, still I'd like know about the case if inter-router ethernet link with more than two routers just like some Internet Exchange, some enterprise backbone or so, for example. What is your (or Miya-san's) recommendation ? Shin Miyakawa -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------