This is the initial commit of a NPTv6 (RFC6296) implementation for VPP.
It's restricted to a single internal to external binding and runs
as an output/input feature on the egress interface.
Type: feature
Change-Id: I0e3497af97f1ebd99377b84dbf599ecea935ca24
Signed-off-by: Ole Troan <otroan@employees.org>
