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Using IPv6 with prefixes shorter than a /64 on a LAN

On Tue, 01 Feb 2011 17:37:55 PST, Bill Stewart said:
> A typical home user will have a /56 of GUA, or maybe a /48 with some
> ISPs.  Anybody who knows enough to figure out how to set a ULA can
> figure out a /64 from their GUA space that's not being auto-assigned
> by one of their various home routers.  So if that's the way you want
> to do things, it won't cost you or your ISP anything.

Your local home network topology may not allow easy choice of a
/64, if you have multiple actual subnets - if it all fit into one /64, why did
you need/want that /56 or /48 in the first place?)

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