Comment by iov6throwaway
6 days ago
I ran network team at an organization with hundreds of thousands hardware hosts in tens-of-megawatts large data centers, millions of VMs and containers, links between data centers, links to ISPs and IXes. We ran out of RFC1918 addresses at around 2011-2012 and went IPv6-only. IPv4 is delivered as a service to nodes requiring it via an overlay network. We intentionally simplified network design by doing so.
This is neither hard nor expensive.
This is one of the only scenarios in which it’s actually easy.
different environments. for us at this point of time it will be expensive without added benefit.