On Mon, 21 May 2018 at 14:59, Mikael Abrahamsson <[email protected]> wrote:
> On Mon, 21 May 2018, Luigi Rosa wrote: > > Hi, > > one of my customer is a US corporate with offices literally on 5 continents > > and one datacentre. Offices are connected each other and to the datacentrevia > > MPLS, each office accesses the Internet via local ISP. > > > > Since they asked me to start planning for IPv6, my idea was originally to buy > > a netblock from ARIN (maybe a /40) and use it for the offices (each office > > has many different IPv4 networks). > > > > My concern is: if I buy a netblock from ARIN and use it in every office, how > > can I handle the access to local ISP? > > > > I thing I should NAT the netblock of each office to handle the routing, or is > > there some other way to do so? > https://tools.ietf.org/html/draft-ietf-rtgwg-enterprise-pa-multihoming-06 > might be relevant to your requirements. > If you feel you must perform NAT, make sure you do 1:1 NAT and not 1:N NAT > (ie, create a solution where each internal IPv6 address gets a unique > external address so you avoid all the port translations). Please don't do NAT. You're just moving a ton of pain onto application developers.
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