Well I see a few things.
Your target computer is being assigned 192.168.244.130
Your dhcp server is 192.168.224.254
You have a proxy dhcp address of 192.168.244.131
You have a gateway address of 192.168.244.2 (a bit strange because your dhcp server is at .254 and you have a dhcp proxy server too).
Your dhcp (next-server) is pointing to .131
And finally your pxe client is trying to load default.ipxe from .254.
I wonder why you have so many systems in the pxe booting process here?
The .131 system makes me think you have dnsmasq in the mix.
But .254 appears to be your dhcp server. Which makes me think your fog server may be at .254 address since it is supplying the dhcp address (running isc-dhcp) and its trying to boot from default.ipxe address.
Can you give us a better design layout of your network and confirm the IP addresses of your fog server, dhcp, server?
I can tell you that fog does not like to have its host system IP address changed after fog is installed. So if that is what happened here we need to resync things.