I have had more than one customer tell me that they need to be able to run io-net on 6.4 - typically because they have 
custom code in the stack, or custom filters, and they work nicely and they don't need all of the new io-pkt features, 
but they do want the 6.4 kernel, or just they want to run on a BSP that is only available in 6.4.

What binaries from 6.3.2 do they need to install on 6.4 ? I'm confident that they need io-net, npm-tcpip.so, npm-qnet.so
 if they use it, their filters & any driver binaries, but can they use the native ifconfig, nicinfo, netstat, or do they
 need the 6.3.2 versions of those too ? Anything else ?

Thanks !

Dave