Custom Carrier board not booting after upgrade to L4T32.1


We have a custom TX2 carrier board, which has been functioning perfectly on the previous L4T release, with a customised BSP.
On L4T 28, we started the BSP customisation process by booting our board with the standard BSP, and noting that the carrier board would power up fine, and the Ethernet port would work by default.
With this release, with the standard BSP, the module will assert CARRIER_PWR_ON, but it does not seem to continue booting from there. We can’t get any Ethernet connection. Can anyone please help us understand why?

Note: This is after we have already created a user account and completed Ubuntu installation using the development kit carrier board and confirming we can ssh using that board.

Please share dmesg with us.