I concur. Corporate LANs are to the internet as VMs are to servers. Trunking, VLANs, and NAT have so completely decoupled these networks from underlying infrast

I concur. Corporate LANs are to the internet as VMs are to servers. Trunking, VLANs, and NAT have so completely decoupled these networks from underlying infrastructure that the transport protocol itself is little more than an implementation detail. IPv4 remains king because it is well-known and cheap -- the fact that we all settled on using the same interoperable protocol for both LANs and the internet was never a foregone conclusion.