Intel I218-LM LAN card speed slow

[robinsmidsrod]

It's not clear if you're using the native iPXE driver or SNP/NII driver. If you're using the SNP driver then this is most likely an issue with your firmware-provided NIC driver.
If the PCI id is not present in intel.c, you could try to add a PCI_ROM() line for the I218LM and see how it works. If it is able to achieve linkup and transfer data we can add it. It might linkup at the wrong speed, which is a known problem with some chipsets using the intel driver. We're working on a fix. Have patience.