Hi Rene, Andrew
I am afraid I still don’t understand one thing- why do we need vpn label if we have both RD and RT’s ?
It was said the router wouldn’t know what VRF the route belongs to… well:
When PE1 advertises the route to PE2 , this route is unique for BGP because of RD and PE2 also knows in what VRF to install it thanks to Route Target value.
So the MPLS VPN label seems to be redundant as the BGP can figure the VRF out based solely on the Route Targets …
What am I missing in this puzzle 
Thank you
Edit- ok, I think I mix up the control and data plane again , found nice explanation here :
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