enterprise IPv6 only client computers and IPv4 connectivity

[Mikael Abrahamsson]

Hi,

If an enterprise today would decide that they're going to run IPv6 only on 
their LAN, they would have recent Win7|Win8|OSX|Ubuntu clients on their 
client computers, what mechanism would they use to access IPv4 Internet?

My thinking immediately went to DS-lite, NAT64/DNS64 and MAP-E, but I 
NAT64/DNS64 isn't "good enough" without 464XLAT, and DS-lite and MAP-E 
requires additional software on most of these operating systems, right? 
Are these kinds of client software even available?

What other mechanism could be used to achieve IPv4 Internet reachability 
over IPv6 only access for end-systems? HTTP proxy or SOCKS-proxy also 
sounds too cumbersome.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se