I was testing with tunnel.py and following the instructions in README located in gnuradio/gr-digital/examples/narrwoband. I found that when I input* ifconfig gr0 192.168.200.1* on machine A, and input* ifconfig gr0 192.168.200.2* on machine B at the same time, both machines showed Tx and Rx packages. But when I* ping 192.168.200.2* from machine A ( or *ping 192.168.200.1*from machine B respectively), one window of machine A only showed Tx packages and another window showed "Destination Host Unreachable". Machine B showed both Rx/Tx packages. It means that machine B can successfully received packages from machine A but A failed to receive replied packages from machine B. It confused me that the packages tx/rx were succeed before the ping. Anyone has idea?
-- Regards, Weixian Zhou
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