I have a query In to Ettus engineering on this. I can’t find any documentation on changing the MAC.
The u-boot environment thinks of the MAC address as precious and once it is set, it won’t let you change it or delete it. Presumably a fresh image from the download site has code that sets the u-boot env from hardware, which then “locks” it. U-boot used to use text files for the environment but now it’s in a binary format AFAiR. Sent from my iPhone > On Nov 27, 2020, at 2:21 PM, Andrew Payne via USRP-users > <usrp-users@lists.ettus.com> wrote: > > > Thanks Aneesh but the decompiled dts file has no mention of the exact MAC > address for eth0, but just to read from the eeprom from what I can gather. > Plus an md5sum of the dtb file on the sdimg from Ettus is the same checksum > as an e310 that has booted. > >> On Fri, Nov 27, 2020 at 1:40 PM Philip Balister <phi...@balister.org> wrote: >> On 11/27/20 1:34 PM, aneesh patel via USRP-users wrote: >> > Hi Andrew, >> > The MAC may be in the devicetree blobs in the boot area of the SD image. >> > You will need dtcedit to decompile, edit, and recompile as needed. >> >> I don't think so, since the first time the card boots it does read from >> the i2c eeprom. >> >> I'm guessing u-boot sets the ethaddr env var and saves it in the >> environment, but I forget where that might be saved. Need to review the >> u-boot configuration for setting about the u-boot env (maybe getting >> saved to the sd card). >> >> Anyone from Ettus paying attention? This is a pretty serious problem for >> people copying cards and using them in different units. The correct >> behavior is follow the MAC address programmed into the i2c eeprom. >> >> Philip >> >> > Amp >> > >> > Sent from Yahoo Mail on Android >> > >> > On Fri, Nov 27, 2020 at 1:23 PM, Andrew Payne via >> > USRP-users<usrp-users@lists.ettus.com> wrote: >> > _______________________________________________ >> > USRP-users mailing list >> > USRP-users@lists.ettus.com >> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > >> > >> > >> > _______________________________________________ >> > USRP-users mailing list >> > USRP-users@lists.ettus.com >> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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