Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6

fredrik danerklint fredan-nanog at
Wed Jan 16 19:53:08 UTC 2013

>> Even tough you have very good arguments, my suggestion would be to have a
>> class A network (I got that right, right?) for all the users and only having
>> 6rd as service on that network.
> ARIN and IETF cooperated last year to allocate for CGN
> use. See RFC 6598. This makes it possible to implement a CGN while
> conflicting with neither the user's RFC1918 activity nor the general
> Internet's use of assigned addresses. Hijacking a /8 somewhere instead
> is probably not a great move.


If I have calculated the netmasks right that would mean to set aside:


for the use of 6rd service:

2001:0DB8:6440:0000::/64 =
2001:0DB8:647F:FFFF::/64 =


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