A long way of saying, I don't agree that the fear of "never being acquired" is a reason for a company to delay their adoption & use of IPv6.
The acquisition problem is overlapping RFC1918 space - and/or running out in the new larger combined entity. I know people who've implemented nested NAT and split horizon DNS so that each aqcuired company has a different view of their internal RFC1918 space with their internal services being on different RFC1918 IPs depending on which part of the building you're in. We're a little company using small amounts of RFC1918, but when we acquired BHost we still couldn't join their management LAN in a sensible fashion, fortunately all the servers had v6 so we ignored it and moved management to v6. Far far quicker. 192.168.0.0/16 is home DSL, and your DMZ, and your other DMZ and your VPN endpoint.... If your acquired company has it's internal network on globally unique v6 space it's all a bit easier. Pete -- Pete Stevens p...@ex-parrot.com http://www.ex-parrot.com/~pete/ https://www.mythic-beasts.com/ https://twitter.com/Mythic_Beasts