You told that your NICs are not detected anymore. OMV does nothing magic here and there were no changes since long time. Thus the only possible reason for this issue is that a kernel update introduces an regression which let the system not detect your NICs.
sorry to mislead you here.
No the aktual device are still there, but the Static or DHCP setting are not applied after reboot. So if have toe set the Ip , dns manualy after every reebot.
hope that makes the bug clear.