nanog mailing list archives
Re: Q: is RFC3531 still applicable?
From: Mel Beckman <mel () beckman org>
Date: Thu, 16 May 2024 12:22:17 +0000
Bill, I would just make it /64s all the way down. Subnetting a /64 is like taking half-breaths from a snorkel: why bother when the supply is effectively infinite? -mel
On May 16, 2024, at 3:35 AM, William Herrin <bill () herrin us> wrote: On Wed, May 15, 2024 at 10:09 PM Mel Beckman <mel () beckman org> wrote:The RFC seems to be concerned with aggregation efficiency, and while that may be a concern someday, so far computer and memory capacity has far outstripped prefix growth in the default-free zone. If you can explain why a /64 would ever not be enough for a single subnet, I’m willing to listen.The subnet contains a router that gateways to another /64. For example, there's a home automation controller and the controller implements its own lan of components on a different media type. Instead of assigning a pair of /64's, you assign a /63 and then route a /64 from the /63 to the home automation controller. Except you don't do that either. IPv6 is plentiful and reverse-DNS delegates cleanly on 4-bit boundaries so you think in terms of 4-bit boundaries instead: assign a /60, use a /64 on the immediate LAN and route a /64 to the home automation controller and retain the balance for the next device that wants to implement an internal subnet. Regards, Bill Herrin -- William Herrin bill () herrin us https://bill.herrin.us/
Current thread:
- RE: Q: is RFC3531 still applicable?, (continued)
- RE: Q: is RFC3531 still applicable? Adam Thompson (May 14)
- Re: Q: is RFC3531 still applicable? William Herrin (May 15)
- Re: Q: is RFC3531 still applicable? Nicolas VUILLERMET (May 15)
- Re: Q: is RFC3531 still applicable? Adam Thompson (May 15)
- Re: Q: is RFC3531 still applicable? Michel Blais (May 15)
- Re: Q: is RFC3531 still applicable? Randy Bush (May 15)
- Re: Q: is RFC3531 still applicable? William Herrin (May 15)
- Re: Q: is RFC3531 still applicable? Jay Acuna (May 15)
- Re: Q: is RFC3531 still applicable? Mel Beckman (May 15)
- Re: Q: is RFC3531 still applicable? William Herrin (May 16)
- Re: Q: is RFC3531 still applicable? Mel Beckman (May 16)