05-13-2015 04:50 AM - edited 03-01-2019 05:47 PM
HI,
I read some document about IPv4 to IPv6 migration and In 6to4 translation, when IPv4 i.e. 192.168.99.1 is converted into IPv6, it shows IPv6 Address 2002:C0A8:6301::1/64. In this , the ::1 is what interface ID or else. and if interface ID then how interface id calculated.?
Thanks,
Kuntal
05-13-2015 08:45 AM
IPv6 addresses beginning with 2002::/16 are special '6to4' addresses (see: http://en.wikipedia.org/wiki/6to4).
The 6to4 address is created by appending the hex version of the IPv4 address to the '6to4' prefix:
In your example:
2002:192.168.99.1::/64
2002:c0.a8.63.01::/64
2002:c0a8:6301::/64
The ::1 is simply the lower half 64-bits of the IPv6 address and can really be just about anything. So it is indeed the "interface ID" but can be calculated from various means including statically assigned.
05-13-2015 10:25 PM
HI,
Thanks michael. But How to define interface ID. in some document i read that last bits are calcaulated from MAC addresses but i am still confuse about interface ID. Can you elaborate in detail ?
Thanks again for providing infromation,
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