I'm not the only person who prefers /48 and hopefully most ISPs will eventually come around and realize that /56s don't really benefit anyone vs. /48s.
Hurricane Electric has been handing out /48s upon request to our customers and users of our IPv6 tunnel services. We do not anticipate changing that policy. Owen On Aug 5, 2011, at 3:56 PM, Frank Bulk wrote: > Let's clarify -- /48 is much preferred by Owen, but most ISPs seem to be > zeroing in on a /56 for production. Though some ISPs are using /64 for > their trials. > > Frank > > -----Original Message----- > From: Owen DeLong [mailto:o...@delong.com] > Sent: Friday, August 05, 2011 12:21 PM > To: Brian Mengel > Cc: nanog@nanog.org > Subject: Re: IPv6 end user addressing > > /56 is definitely preferable to /64, but, /48 really is a better choice. > > /56 is very limiting for autonomous hierarchical deployments. > > It's not about number of subnets. It's about the ability to provide some > flexibility > in the breadth and depth of bit fields used for creating hierarchical > topologies > automatically. > > Owen > > On Aug 5, 2011, at 9:17 AM, Brian Mengel wrote: > >> In reviewing IPv6 end user allocation policies, I can find little >> agreement on what prefix length is appropriate for residential end >> users. /64 and /56 seem to be the favorite candidates, with /56 being >> slightly preferred. >> >> I am most curious as to why a /60 prefix is not considered when trying >> to address this problem. It provides 16 /64 subnetworks, which seems >> like an adequate amount for an end user. >> >> Does anyone have opinions on the BCP for end user addressing in IPv6? >
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