I've moved the samba server over to the wireless, not the fastest solution, but I suspect this may not take too long to fix. If it does, I will revert to an older kernel version as you suggest.
Eric
I can verify that I have the same issue after upgrading my Orange Pi 2+. with the latest kernel upgrade. WiFi works but hardwired ethernet does not. I have the same symptoms as you. Both ends report connection and there is no traffic. Let me know if I can help by reporting anything, but I think I'm just confirming the same issue.
Eric