[154037] in North American Network Operators' Group
Re: IPv6 /64 links (was Re: ipv6 book recommendations?)
daemon@ATHENA.MIT.EDU (valdis.kletnieks@vt.edu)
Thu Jun 21 20:38:24 2012
To: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
In-Reply-To: Your message of "Fri, 22 Jun 2012 08:40:02 +0900."
<4FE3B0D2.7080705@necom830.hpcl.titech.ac.jp>
From: valdis.kletnieks@vt.edu
Date: Thu, 21 Jun 2012 20:36:48 -0400
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Fri, 22 Jun 2012 08:40:02 +0900, Masataka Ohta said:
> Owen DeLong wrote:
> > What if my ISP just routes my /48? Seems to work quite well,
> > actually.
>
> Unlike IPv4 with natural boundary of /24, routing table
> explosion of IPv6 is a serious scalability problem.
Do you have any *realistic* and *actual* reason to suspect that the IPv6
routing table will "explode" any further than the IPv4 has already? Hint -
Owen's /48 will just get aggregated and announced just like the cable companies
*already* aggregate all those /20s of customer /32s. Unless Owen multihomes - at
which point he's a new entry in the v6 routing tables - but *also* almost
certainly a new entry in the v4 routing table. Routing table size depends on
the number of AS's, not the amount of address space the routes cover.
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