I did not know we could do exec in ssh config so I learnt something new today! However, I also have a similar setup but for my SDN I use Twingate which lets me

I did not know we could do exec in ssh config so I learnt something new today! However, I also have a similar setup but for my SDN I use Twingate which lets me re-route DNS when its connected so all I need to do is the equivalent of defining *.lan as a resource in the UI and then I can reach it no matter when I'm connected via SDN or not.