nanog mailing list archives
Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6
From: Sander Steffann <sander () steffann nl>
Date: Wed, 16 Jan 2013 21:15:21 +0100
Hi,
If I have calculated the netmasks right that would mean to set aside: 2001:0DB8:6440::/42 for the use of 6rd service: 2001:0DB8:6440:0000::/64 = 100.64.0.0 .... 2001:0DB8:647F:FFFF::/64 = 100.127.255.255
You probably should add a few extra bits for subnetting behind the 6rd CPE. Delegating one /64 would be annoying as more and more CPEs have separate home/office/guest networks. Giving a /56 to each customer would be good and would only take an IPv6 /34 to map from 100.64.0.0/10. That is a quarter of the smallest IPv6 allocation an ISP can get. ISPs can get plenty of IPv6 address space these days if they need it. Smaller ISPs don't need to map the whole 100.64.0.0/10, they could just start with 100.64.0.0/16 for example, which would only take a /40 to give every customer a /56. More blocks can always be added to the 6rd setup later. Cheers, Sander
Current thread:
- Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 fredrik danerklint (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Justin M. Streiner (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Daniel Ankers (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Mikael Abrahamsson (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 William Herrin (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 fredrik danerklint (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 William Herrin (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 fredrik danerklint (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Sander Steffann (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 William Herrin (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Mark Andrews (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 . (Jan 17)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Mike Jones (Jan 17)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Brandon Ross (Jan 17)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 . (Jan 17)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Neil J. McRae (Jan 28)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Daniel Ankers (Jan 16)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 William Herrin (Jan 17)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Lee Howard (Jan 17)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 William Herrin (Jan 17)
- Re: Slashdot: UK ISP PlusNet Testing Carrier-Grade NAT Instead of IPv6 Justin M. Streiner (Jan 16)