Lost ethernet link after upgrading to 2.9.43

Has anyone else had any problems with losing ethernet link after upgrading to 2.9.43?

I pushed out 2.9.43 to over 250 mikrotik devices and I’ve had 4 of them that the ethernet refuses to work at 100mbit/auto negotiation now.

I thought the first one I had a bad network cable, but after 3 more did the exact same thing after they rebooted from installing .43 I thought there might be something wrong in mikrotik.

I’ve had 2 rb 532’s, a 112, and a 133c do it. I have the 112 at my office and no matter what patch cable or computer/switch I plug it into it will not work when set to 100mbit/auto negotiation. I can plug a different routerboard into the same patch cable and get 100mbit speed so I know the cable/switch is good..

Thanks,
Gerard

Gerard, what configuration do you have for the ‘interface ethernet’ interfaces for the particular boards ?