Additional MPLS support in NTA

–Up to three incoming MPLS labels with experimental bits and an end-of-stack bit
–Positions of the above labels in the label stack
–Type of the top label
–An address prefix associated with the top label specific to the label type:
TE-This is always set to "0.0.0.0" because tunnel label addresses are not supported.
LDP-The address prefix is the IP address of the next-hop.
VPN-If the VRFs do not have overlapping IP addresses, the address prefix is the the destination prefix. If the VRFs have overlapping IP addresses the destination prefix given may be ambiguous.