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Stateless Proposal : Optimistic DAD (draft-moore-ipv6-optimistic-dad-02.txt) The odds of IPv6 address collision are low Allow communication to be establish over a tentative address, while attempting to minimize disruption in the case of collision. With a tentative address, NA is sent with O flag = 0. If A neighbor already has a NC entry for that address, the NA should be ignored. NSs cannot be sent while an address is tentative traffic for unknown neighbors is redirected via the router. The odds of IPv6 address collision can be calculated with ‘the Birthday Problem’ (draft-soto-mobileip-random-iids-00.txt) P(2^62,20)=< 7.8 e-17 P(2^62,100)=< 2.1 e-15 P(2^62,500)=< 5.4 e-14 P(2^62,1000)=< 2.2 e-13 P(2^62,5000)=< 5.4 e-12 |