nanog mailing list archives
Re: v6 subnet size for DSL & leased line customers
From: Chris Adams <cmadams () hiwaay net>
Date: Fri, 21 Dec 2007 11:20:41 -0600
Once upon a time, TJ <trejrco () tjevans net> said:
Short answer - no spec for it. ARIN breaks it at /56, as a nod towards maybe a /48 for everyone is a bit much.
On ARIN's site: The following guidelines may be useful (but they are only guidelines): * /64 when it is known that one and only one subnet is needed * /56 for small sites, those expected to need only a few subnets over the next 5 years. * /48 for larger sites For end sites to whom reverse DNS will be delegated, the LIR/ISP should consider making an assignment on a nibble (4-bit) boundary to simplify reverse lookup delegation. So, the guidelines are on 8 bit boundaries, but then right below they also suggest making assignments on 4 bit boundaries (and it is all "only guidelines"). -- Chris Adams <cmadams () hiwaay net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.
Current thread:
- v6 subnet size for DSL & leased line customers Scott Weeks (Dec 19)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 19)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Kevin Oberman (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Deepak Jain (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Joe Greco (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Owen DeLong (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Chris Adams (Dec 21)
- Message not available
- Re: v6 subnet size for DSL & leased line customers Chris Adams (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Robert E. Seastrom (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Deepak Jain (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Mark Smith (Dec 20)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 19)
- Re: v6 subnet size for DSL & leased line customers Joe Greco (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Owen DeLong (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Joe Greco (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 21)
- Re: v6 subnet size for DSL & leased line customers Joel Jaeggli (Dec 22)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 22)
- Re: v6 subnet size for DSL & leased line customers Joel Jaeggli (Dec 22)
- Re: v6 subnet size for DSL & leased line customers Randy Bush (Dec 22)