@AisleWay The WOL Broadcast plugin is designed specifically for your use case.
Seeing as fog server is running on 10.133.x.x, the WOL packets are restricted (by default) to that particular subnet.
If you add the broadcast of 10.20.x.x to the plugin, it will send there.
If you need it to go to 10.10.x.x, add it to the plugin and wol will send via that as well.
Not sure what else we can provide.
This seems, to me, to indicate that the other networks are separated.
For example:
10.x.x.x is generally the whole scope, (10.0.0.0/8) but you have your network broken into seperated subnets.
For example:
10.0.0.0/16
10.1.0.0/16
etc…
If all systems in your network is in the 10.x.x.x scope, why the separation when you want not to have to worry about what network to send across?