X1 Gen1 Carbons hang when trying to get a DHCP address through the embedded script

[robinsmidsrod]

You're using the USB branch published by John Willis, aren't you? Because it seems like you're trying to use an iPXE-native driver for the ASIX USB NIC. I would recommend you try to use the official branch from git.ipxe.org and try to use the undionly.kpxe driver via chainloading. I believe the ASIX USB adapter is not supported by the USB ECM/NCM drivers, so using UNDI is your only option (for now). Once we're able to incorporate the ASIX USB driver into the new USB driver framework for iPXE you should be able to use ipxe.usb or ipxe.pxe.