TFTP connection timed out results in Boot Failure?

[stefanbj]

It would seem that if there is a problem during the TFTP download in the boot.ipxe script, the end result is a Failed Boot and the machine gets stuck in BIOS.

 ...
 No ProxyDHCP responce, retrying (attempt 5/10)
 Configuring (net0 00:02:00:00:00) ...... ok
 nodes/.../boot.0......... Connection timed out (http://ipxe.org/....)
 FATAL: INT18: BOOT FAILURE

Perhaps the pixiecore/boot.ipxe's "chain ${filename}" also needs a "|| goto fail" added to it ?