On 27/03/2023 11:53, Marcus Müller wrote:
Hi Ojas,
it's a bit hard to know how that VPN of yours is actually set up. In
general, doing arbitrary other networking on the same machine has
absolutely no effect on UHD, as long as the packets to and from the
USRP still go through regularly.
What might be happening here is that the VPN establishes itself as the
default route, including for the broadcast address and other addresses
of the private network you only use to connect to the USRP.
Best,
Marcus
For "uhd_find_devices" in particular, it acquires the list of all your
network interfaces (which would include the virtual interface
set-up by your VPN software) and then sends a *subnet broadcast* on
each of those looking for a reply from a USRP.
It's probably that the VPN software isn't handling this case very well.
But if you always use explicit device addressing in your device
arguments, you never exercise the code that sends out
broadcast "probes". Since you know where your X410 is connected,
and what its address is, you should just always
use those and not rely on the "find my usrp" feature that's built-in
to UHD.
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