Wasn't the idea to 44.190.0.0/16 subnets available
via BGP? If so, why
would there be NAT?
Of course for directly connected networks there will be no NAT, but there are those
networks
that are connected to internet via consumer internet connections (and no IPIP tunneling)
and the traffic from those networks to the 44.190 space will pass through NAT routers.
Rob