In 2008 I was asked in one company to add ipv6 from a network stack because it was going ot be a government mandate to support ipv6. That came and went. In 2015

In 2008 I was asked in one company to add ipv6 from a network stack because it was going ot be a government mandate to support ipv6. That came and went. In 2015 I was asked to add VLAN support to another network stack https://tools.ietf.org/rfc/rfc5517.txt https://tools.ietf.org/rfc/rfc5517.txt to allow duplicate ipv4 address to co-exist in the same network. Ipv4 is not going anywhere, it doesn't have to. IpV6 is an effective way to segment your network at the hardware level.