nanog mailing list archives
Re: Addressing plan exercise for our IPv6 course
From: Saku Ytti <saku () ytti fi>
Date: Sun, 25 Jul 2010 17:40:06 +0300
On (2010-07-25 10:28 -0400), Valdis.Kletnieks () vt edu and Mark Smith wrote similarly:
http://www.wolframalpha.com/input/?i=1-((2^40)!)%2F((2^40)^1000000+((2^40)-1000000)!)+ So if there are million assigned ULA's there is 36.5% chance of collision, if formula is right.Bzzt! Wrong, but thank you for playing.
Point I was trying to convey is that you should not assume ULA to be globally unique. Visibility of IP can extend past routing, for example someone could use x-forwarded-for and assume rfc4193 to be as unique as any other IPv6 address. I personally have no beef with ULA and I don't mind that it can't be trusted to be globally unique identifier. It'll still allow well planned enterprise networks to avoid renumbering in M&A. -- ++ytti
Current thread:
- Re: Addressing plan exercise for our IPv6 course, (continued)
- Re: Addressing plan exercise for our IPv6 course David Conrad (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Jack Bates (Jul 24)
- Re: Addressing plan exercise for our IPv6 course David Conrad (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Mark Smith (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Randy Bush (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Doug Barton (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Karl Auer (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Saku Ytti (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Mark Smith (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Valdis . Kletnieks (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Saku Ytti (Jul 25)
- RE: Addressing plan exercise for our IPv6 course Nathan Eisenberg (Jul 25)
- RE: Addressing plan exercise for our IPv6 course Karl Auer (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Valdis . Kletnieks (Jul 25)
- Re: Addressing plan exercise for our IPv6 course David Conrad (Jul 24)
- Re: Addressing plan exercise for our IPv6 course Jack Bates (Jul 24)
- Re: Addressing plan exercise for our IPv6 course David Conrad (Jul 25)
- Re: Addressing plan exercise for our IPv6 course Owen DeLong (Jul 24)
- Re: Addressing plan exercise for our IPv6 course Mark Smith (Jul 24)