I don't mean to be too inflammatory, but the data behind the API is all but worthless in its current state.  There is little to no consistency with how Product ID's, or thereby the software versions, are written.  Take the following OS: IOS-XE 3.10S....

Having trouble modelling my environment.  The following scenarios work: CSR1000v Tunnel to CSR1000v Tunnel creates LDP neighbor.IOSv Gigabit Interface to IOSv Gigabit Interface creates LDP neighbor. The following do not IOSv Tunnel to CSR1000v Tunnel...