@tseraj First, troubleshoot that it is the device and not the network. Hookup a dumb switch (unmanaged consumer grade switch) between your building’s network and this computer, and try again. If it succeeds, it’s your network. If it’s the same issue, it’s something with the device. If it’s something with the device, You may need to use the 10-second delay boot ROMs that Tom recently added. What is the filename that you have set in DHCP option 067/filename ? There’s a directory on the fog server, I think it’s /tftpboot/10secdelay or something similar. What you need to try is rename your currently in-use to blah.old and then move the 10secdelay version of that file to the /tftpboot directory so that it starts getting used, and then try again.