>this is with reference to the free BSD networking code for ipv6.
>Could any body tell why in link local addresses & other link local related things 
>they are storing if_index in the second 16bits of the address. for eg there will be 
>statement like
>ia->ia_addr.sa_addr.sin_add16[1] = ifp->if_index.
>Please tell me its significance & how it is useful & why u have chosen to use as such.

        http://orange.kame.net/dev/cvsweb.cgi/kame/IMPLEMENTATION
        (see section 1.3)

itojun

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