21 Jul
2019
21 Jul
'19
8:42 a.m.
- I want to
make a 1:1 mapping of every assigned address in our IPv4
subnet to a /16 network within that /48 space.
E.g. when we get 1234:5678:abcd::/48 from our ISP, I would map
44.137.0.1 to 1234:5678:abcd:0001::/64, up to 44.137.255.255 mapped
to 1234:5678:abcd:ffff::/64
I'm a bit lost at what you're suggesting,
and the practical way it would
be implemented. At first glance, this looks like a recipe for
suboptimal routing to the outside world. I have 2 AMPRnet IPv4 allocations - one BGP connected,
one IPIP
connected. Both sites have IPv6 available. Here, where the IPIP mesh
terminates has a /56. I currently have a /64 on the VPS, but as there's
only one host, it wouldn't be difficult to carve that into AMPRnet and
non AMPRnet parts, because IPs are assigned by hand and are all on the
same interface.
In my opinion it is not a good idea to deploy a system based on
splitting a /64 net
in smaller subnets. You could do that locally, but you would not want
to give other
local users an IPv6 network that is smaller than a /64. This is going
to cause all kinds
of difficulties. That is why my intention is to give every user at
least a /64.
Rob