nanog mailing list archives
Re: Minimum IPv6 size
From: Leo Bicknell <bicknell () ufp org>
Date: Sat, 3 Oct 2009 12:35:03 -0700
In a message written on Sat, Oct 03, 2009 at 03:01:42AM -0700, Leo Vegoda wrote:
Why the whole /16 rather than just that /29 and a few other blocks set aside for /48s? There are a lot of /48s in a /16, so protecting against someone accidentally deaggregating their allocated /32 into / 48s seems legitimate.
Our track record of keeping up with these lists as in industry in IPv4 is pretty poor, I see no reason to think IPv6 is any better. The more restrictive, the greater the chance of inadvertently filtering something you should not. The problem of a peer deaggregating too many routes to you is better handled with max-prefix settings. We've had this technology for a long time, and if you're really concerned about getting an extra 10k routes from a peer use max-prefix, not some draconian, static, never updated prefix filter. -- Leo Bicknell - bicknell () ufp org - CCIE 3440 PGP keys at http://www.ufp.org/~bicknell/
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Current thread:
- Minimum IPv6 size Seth Mattinen (Oct 02)
- Re: Minimum IPv6 size Kevin Oberman (Oct 02)
- Re: Minimum IPv6 size James Aldridge (Oct 03)
- Re: Minimum IPv6 size Leo Vegoda (Oct 03)
- Re: Minimum IPv6 size James Aldridge (Oct 03)
- Re: Minimum IPv6 size Leo Bicknell (Oct 03)
- Re: Minimum IPv6 size Kevin Oberman (Oct 03)
- Re: Minimum IPv6 size Christian Seitz (Oct 03)
- Re: Minimum IPv6 size Kevin Oberman (Oct 03)
- Re: Minimum IPv6 size James Aldridge (Oct 03)
- Re: Minimum IPv6 size Kevin Oberman (Oct 02)
- Re: Minimum IPv6 size Seth Mattinen (Oct 02)
- <Possible follow-ups>
- Re: Minimum IPv6 size Brandon Butterworth (Oct 03)
- Re: Minimum IPv6 size Brandon Butterworth (Oct 03)
- Re: Minimum IPv6 size Matthew Petach (Oct 03)
- Re: Minimum IPv6 size Leo Vegoda (Oct 04)
- Re: Minimum IPv6 size Kevin Oberman (Oct 04)
- Re: Minimum IPv6 size Matthew Petach (Oct 03)