[c-nsp] NETFLOWv9/IPFIX and export of inner traffic in GTP tunnel

[wojtas at wizja.net.pl]

Hello,

Does anyone has any idea of a router that allows to exports flows of  
inner traffic in a tunnel, particularly in GTP ?
I've heard about, let's say, 3party solutions like nprobe that allows  
to do that, but nothing comes to mind when speaking about  
operator-level hardware.

Any hints will be well appreciated
Thanks in advance!

Wojtek