nanog mailing list archives
Re: IPv6 fc00::/7 ? Unique local addresses
From: Joel Jaeggli <joelja () bogus com>
Date: Wed, 20 Oct 2010 22:12:44 -0700
On 10/20/10 9:44 PM, Adrian Chadd wrote:
On Thu, Oct 21, 2010, Graham Beneke wrote:I've seen this too. Once again small providers who pretty quickly get caught out by collisions. The difference is that ULA could take years or even decades to catch someone out with a collision. By then we'll have a huge mess.
having merged datacenters with multiple overlapping v4 prefixes I'll just observe that this is inevitable in v4, you can take steps that make it less likely to impact you in v6.
You assume that people simply select ULA prefixes randomly and don't start doing linear allocations from the beginning of the ULA range.
actually I assume they're going to just assign the whole botton half to themselves like they do with 10/8 since using fc01::/8 is clearly more work. If you do assign randomly the probability of someone deliberately assigning the same /48 for use in their network seems pretty low, you're a heck of a lot better off than with rfc 1918.
Adrian
Current thread:
- RE: Re: IPv6 fc00::/7 - Unique local addresses, (continued)
- RE: Re: IPv6 fc00::/7 - Unique local addresses George Bonser (Oct 21)
- Re: IPv6 fc00::/7 - Unique local addresses Jack Bates (Oct 21)
- Re: IPv6 fc00::/7 - Unique local addresses Mark Andrews (Oct 21)
- Re: IPv6 fc00::/7 — Unique local addresses Owen DeLong (Oct 21)
- Re: Re: IPv6 fc00::/7 — Unique local addresses Mark Andrews (Oct 21)
- Re: IPv6 fc00::/7 — Unique local addresses Owen DeLong (Oct 25)
- Re: Re: IPv6 fc00::/7 — Unique local addresses Mark Andrews (Oct 20)
- Re: IPv6 fc00::/7 — Unique local addresses Matthew Kaufman (Oct 20)
- Re: IPv6 fc00::/7 — Unique local addresses Graham Beneke (Oct 20)
- Re: IPv6 fc00::/7 ? Unique local addresses Adrian Chadd (Oct 20)
- Re: IPv6 fc00::/7 ? Unique local addresses Joel Jaeggli (Oct 20)
- Re: IPv6 fc00::/7 ? Unique local addresses Mark Smith (Oct 20)
- Re: IPv6 fc00::/7 — Unique local addresses Mark Smith (Oct 20)
- Re: IPv6 fc00::/7 — Unique local addresses Owen DeLong (Oct 21)
- Re: IPv6 fc00::/7 — Unique local addresses Owen DeLong (Oct 21)
- Re: IPv6 fc00::/7 — Unique local addresses Brandon Ross (Oct 21)
- Re: IPv6 fc00::/7 — Unique local addresses Owen DeLong (Oct 21)
- Re: IPv6 fc00::/7 — Unique local addresses William Herrin (Oct 21)
- SixXS ULA Registry clarifications / questions / comments (Was: IPv6 fc00::/7 — Unique local addresses) Jeroen Massar (Oct 21)
- Re: SixXS ULA Registry clarifications / questions / comments (Was: IPv6 fc00::/7 — Unique local addresses) Owen DeLong (Oct 21)