Handling DHCP timeouts in script

[digitalis99]

I can't get a retry in either error phase of my script, the DHCP request or the sanboot. Any error in either one generates the "No more network devices" prompt, at which point I'm dumped back to the BIOS. There doesn't appear to be any error handling at all. My current script is quite simple. I can't see why neither goto is working...

#!ipxe

:retry_dhcp
dhcp || goto retry_dhcp

set initiator-iqn iqn.2010-04.org.ipxe:${mac:hexhyp}
sanboot iscsi:10.0.0.1:::0:iqn.2008-08.com.target:prod-disk1 ||
sleep 1
goto retry_dhcp