I've got a rather early Pi2 v1.1 (so, armv7) that is getting stuck in a netboot loop. Is there a keystroke sequence on the serial console that will break out of the loop, or at least force a reset?
The console displays
... Trying booting from Ethernet device addr 5 Initialise ethernet with MAC b8:27:eb:1a:5a:4b Wait for Link up Failed to initialise link ...
Thanks for reading,
bob prohaska