[Discuss-gnuradio] TUN/TAP interface advantage

[usrp n210]

Is there any advantage to use TUN/TAP interface ?

As 802.11bbn also uses TUN/TAP interface.

But I think in the tun/tap performance degrades as we send the packet back to user process?

Therefore I compare results with benchmark_xx.py in /ofdm  with tunnel.py in /ofdm.

In results benchmark_xx.py do not give consistent throughput (i.e. it varies on channel) but tunnel.py gives 100% throughput irrespective of channel

Will there be any valid reason for this ?

If I want to implement 2-way communication in USRP should I use TUN/TAP interface?