Huh. This error is one of those we put in as good practice, so that problems don't cause crashes or uncommented exceptions, but I've never actually seen it occur in real life (especially not with a default image).
Are you sure you've check this is a valid connection? I.e., 192.168.1.10 is the device you're expecting and so on? Otherwise, I'm a bit baffled. Is this the RJ45 address, or a QSFP address? --M On Mon, Mar 16, 2026 at 7:48 PM Eugene Grayver <[email protected]> wrote: > Sorry about spamming this list :) > > I just rebuilt the clean/unmodified X4_200 image on the X440 just to make > sure the build process worked. I loaded the created .bit file and am now > getting the following error: > > Specified destination address is unreachable: 1:0. > > What could be the problem? Google says it's a mismatch between the UHD > and FPGA versions, but I can't see how that would happen. > > -------------------------- > ~/uhd-git/host/build$ uhd_usrp_probe --args addr=192.168.1.10 > [INFO] [UHD] linux; GNU C++ version 13.3.0; Boost_108300; > UHD_4.9.0.0-290-gcfb98407 > [INFO] [MPMD] Initializing 1 device(s) in parallel with args: > mgmt_addr=192.168.1.10,type=x4xx,product=x440,serial=344FF6B,name=ni-x4xx-344FF6B,fpga=X4_200,claimed=False,addr=192.168.1.10 > [INFO] [MPM.PeriphManager] init() called with device args > `fpga=X4_200,mgmt_addr=192.168.1.10,name=ni-x4xx-344FF6B,product=x440,clock_source=internal,time_source=internal,initializing=True'. > [ERROR] [RFNOC::GRAPH] Caught exception while initializing graph: > RfnocError: Specified destination address is unreachable: 1:0 > Error: RuntimeError: Failure to create rfnoc_graph. > ------------------- > > Eugene Grayver, Ph.D. > Principal Engineer > 310-336-1274 > _______________________________________________ > USRP-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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