#!ipxe
# Minimum viable iPXE script
:start
prompt --key 0x02 --timeout 2000 \
  Press Ctrl-B for the iPXE shell... \
&& shell ||

# Find first working DHCP interface
:dhcp
dhcp \
&& goto dhcp_pass \
|| goto dhcp_fail

# No DHCP servers or IPv6 autoconf found
:dhcp_fail
prompt --key 0x02 --timeout 5000 \
  DHCP FAIL: Ctrl-B for the iPXE shell; retry in 5 seconds \
&& shell || goto start

# DHCP found
:dhcp_pass
isset ${syslog} \
&& goto syslog \
|| goto autoboot

# Log to syslog, but don't fail anyway
:syslog
echo Sending logs to syslog:${syslog}
syslog ${syslog} ||

# Boot if possible, doesn't return on success
:autoboot
autoboot || goto fail

# Log it and reboot
:fail
prompt --key 0x02 --timeout 5000 \
  DHCP GOOD, AUTOBOOT FAIL: Ctrl-B for the iPXE shell; retry in 5 seconds \
&& shell || 

goto start