I followed the installation instructions on wiki page, however, I still met "Operation not permitted" problem shown below even though I added the USRP group and obtained the permission to access USRP. So far, benchmark_tx.py works correctly, but I was wondering if this message is a critical one. Can I ignore this message? It seems that running as sudo will solve it.
socket(PF_PACKET, SOCK_RAW, htons(0xBEEF)): Operation not permitted eth0: socket: No such file or directory