@Wayne-Workman It did not work -( Tried two switches, also wireshark + tcpdump shows STP, so I guess it is enabled… Thank You for the help anyway

Hey, guys. Have an issue when iPXE booting, it says “connection timed out” with error 4c126035. iPXE configuring NIC in 1-3 attempts (error 040ee119), finally succeeds and after that gives an error above. Everything worked fine on separate network for fog (it is not convenient for me) , but ever since I moved it to an existing it is not. I ran out of ideas how to troubleshoot, seen old posts about similar problem, but solutions did not help. Using ubuntu 14.04, Fog Version 1.3.0-RC-8 and dnsmasq for integrating fog to an existing network. Thank You for your help!