@kthoma85 said in Dynamic IP set up in config.g doesn't work:
*** Ethernet networking: The following lines are used for factory testing - PLEASE REMOVE THEM
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0xED ; MAC Address
M552 P0.0.0.0 ; IP address
M554 P192.168.1.255 ; Gateway
M553 P255.255.255.0 ; Netmask
;*** End of factory test lines to be removed
Remove the lines and just use M552 S1, that should allow DHCP to pull an IP address along with the gateway, etc, and let the MAC address of the hardware speak for itself.