On Mon, 2005-03-07 at 16:30 +0100, Frederic Beck wrote: >Hello > >I'm using radvd to send RA in an IPv6 test network. > >When using 64 bits long prefixes, everything works fine, my network is >functional. But when i use 48 bits long prefixes, the hosts do not >perform address autoconfiguration. > >I used exactly the same configuration than with the /64... > >Is it a problem or am i missing or misunderstanding something ? b ;) Every routed ethernet gets a /64, a 'site' gets a /48. A /48 can thus contain 65536 separate routed ethernets. Thus you assign a /64 to a single switched non-routed network. The host will then receive this /64 RA and taking it's own EUI-64 identifier will nicely slam them together and create a automatically configured IPv6 address. Note that a single /64 can contain 2^64 addresses, which is way more than your switch is likely to handle in the first place. If you have received a /48 allocation from an ISP you should thus split it up into /64's and give one each to each unrouted network. Greets, Jeroen
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