Please,
enable the netinstall on all ports for devices having more than one ethernet port. In case only one port at once can be in netinstall mode, let it be the first port that reports link-up status just before the netinstall can begin (the first physically connected port).
Reason: Sometimes the port that is the only one usable port of the device to perform netinstall is broken so there is no other option how to make netinstall (mainly for devices without serial port).
I expect that it could be done by small routerboot modification. Hopefully.
Thank you in advance.