ipv6 validation

[Christos Georgiou]

On 30 Mar 2006 11:40:08 -0800, rumours say that jiri.juranek at kctdata.cz
might have written:

>thanks a lot for this solution.
>Next thing: how may i find out that that address is multicast one? is
>there some easy possibility or i have to use regex now?

To quote a Google reply:

"IPv6 multicast addresses are distinguished from unicast addresses by the
value of the high-order octet of the addresses: a value of 0xFF (binary
11111111) identifies an address as a multicast address; any other value
identifies an address as a unicast address."
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