[quote=“oneblot, post: 8904, member: 1063”]I have a similar setup and there are a couple of things to try.

1, find the file called /etc/default/isc-dhcp-server
Change the line [I][COLOR=#ff0000]INTERFACES"“[/COLOR][/I] to [I][COLOR=#ff0000]INTERFACES"eth0”[/COLOR][/I]
[COLOR=#000000] Edit the connection setting of eth0. Under IPv4 settings tick connect Automatically and set it to manual[/COLOR]
[COLOR=#000000] Enter IP address and netmask of the fog server[/COLOR]
[COLOR=#000000]2, From a terminal type[/COLOR]
[I][COLOR=#000000] sudo service isc-dhcp-server restart[/COLOR][/I][COLOR=#000000] - this will restart the dhcp server[/COLOR]

[I][COLOR=#000000] sudo service tftpd-hpa restart - this will restart the tftp service[/COLOR][/I]

[COLOR=#000000]I find that these two commands both need to be run when the fog server is switched on especially if there is nothing connected to it via ethernet cable.[/COLOR]

[COLOR=#000000]Give it a go and see it it works it did for me.[/COLOR][/quote]
I had the exact same issue and this helped a bundle. Thanks for the posts guys! Saved me alotta time!