We need compatibility of nextgen IP with IPv4 in same way as 10Mb Ethernet is compatible with 100Mb Ethernet, i.e. IPv6 networks must be transparent for unmodif

We need compatibility of nextgen IP with IPv4 in same way as 10Mb Ethernet is compatible with 100Mb Ethernet, i.e. IPv6 networks must be transparent for unmodified IPv4 traffic, without of encapsulation of any kind, to share investments, not to compete on them.