iPXE config file that I grab via HTTP

#!ipxe
set ipxe-ip 10.X.Y.Z
set base-url http://${ipxe-ip}/iso/loop/install/netboot/ubuntu-installer/amd64
set preseed http://${ipxe-ip}
set http-proxy http://${ipxe-ip}:3142
set nic eth2
set use-cached 1
dhcp net1
echo mac...............: ${net1/mac}
echo ip................: ${ip}
echo netmask...........: ${netmask}
echo gateway...........: ${gateway}
echo dns...............: ${dns}
echo domain............: ${domain}
echo dhcp-server.......: ${dhcp-server}
echo filename..........: ${filename}
echo next-server.......: ${next-server}
echo uuid..............: ${uuid}
echo serial............: ${serial}
echo hostname..........: ${hostname}
echo syslog............: ${syslog}
echo .
kernel linux
initrd initrd-mlx4.gz
imgargs linux auto=true url=${preseed} http_proxy=${http-proxy} interface=${nic} hostname=REMOVED-${serial} domain=${domain} DEBCONF_INTERFACE=noninteractive
boot
|| shell