In message <cakd1yr2cez4ymr30vaabx5ywalszngp+0maxsg9dwcvobxw...@mail.gmail.com>
, Lorenzo Colitti writes:
>
> > As a home user who currently gets a /64 (via 6rd) from my ISP, I find this
> > recommendation insufficient.
>
>
> Who is the ISP? Do you know why they are only handing out /64? Have you
> tried to talk to them?
Lots of ISP's took the easy way out and buried the entire 32 bits
of IPv4 address wasting tonnes of space.
option 6rd 0 32 2001:DB8:: 2001:DB8::1 2001:DB8::2
When with 10 seconds of thought they could have given everyone a
/60 assuming their IPv4 addresses were in 16 or less /8's which
covers almost all ISPs on the planet.
option 6rd 8 36 2001:DB8:0000: 2001:DB8:0000:1 2001:DB8:0000:2
option 6rd 8 36 2001:DB8:1000: 2001:DB8:1000:1 2001:DB8:1000:2
....
option 6rd 8 36 2001:DB8:f000: 2001:DB8:f000:1 2001:DB8:f000:2
And if your addresses are on 32 or less /8's you hand out /61's.
option 6rd 8 37 2001:DB8:0000: 2001:DB8:0000:1 2001:DB8:0000:2
....
option 6rd 8 37 2001:DB8:f800: 2001:DB8:f800:1 2001:DB8:f800:2
or they could have look at each of their IPv4 allocations and made
each one its own 6rd domain and handed out /48s. Remember this is
all stuff the ISP advertises using DHCP. The end user doesn't have
to enter any of this.
Mark
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: [email protected]
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