I noticed after the upgrade that the mac address had changed. My DHCP server wasn't handing off the correct address. Also I think the device ID for the cloud service had changed, so that might be where you are experiencing a problem as well. Also can't remember if Nano was on the onion before, but i had to reinstall that as well.
S
Best posts made by Simon Cain
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RE: After Warp Core upgrade, device unreachable