On 2024 Oct 18 (Fri) at 19:09:24 +0200 (+0200), Rinse Kloek wrote: :On 18-10-2024 17:34, Yury Bogdanov wrote: :> Its good idea to give /27 because ripe ncc reserve /27 even if they give :> /29. : :The reason RIPE reserves some space is to allow for growth and to be able to :provide the LIR with a :The goal is not to allocate an LIR a /27 or /26 if they only need a /32. This :contiguous block is also made so that the LIR can have a single BGP :announcement for their IPv6 routes (which we, as router maintainers, would :appreciate since it reduces the need for routers with larger FIB capacity). : :Here is an random example from the RIPE Delegated file from ftp.ripe.net. You :see that even a /25 is "reserved" if an allocation is done for a /29: : :2001:3bc0:: 29 allocated to LIR :2001:3bc8:: 29 reserved :2001:3bd0:: 28 reserved :2001:3be0:: 27 reserved :2001:3c:: 29 (This hole is missing in the RIPE delegated file, somebody knows why ?) 2001:3c:: is actually 2001:003c:: I think you mean 2001:3c00::/29 :2001:3c08:: 29 reserved :2001:3c10:: 28 reserved :2001:3c20:: 27 reserved : : -peter