I don't know about FortiClient specifically, it's a sorry piece of crap that's more often borken than not.
With openfortivpn, you can usually ignore whatever routes you receive and set up your own. I haven't tried the specific set up you talk about, but I don't see why it wouldn't work. However, you would most likely need to NAT on the machine running the Fortinet client.
Sounds like I'll need to learn how to setup custom routes and it's syntax. I have tried to run away from it all my professional life but maybe now I need to.
> However, you would most likely need to NAT on the machine running the Fortinet client.
Could you please elaborate a little more here? NAT from where to where?
With openfortivpn, you can usually ignore whatever routes you receive and set up your own. I haven't tried the specific set up you talk about, but I don't see why it wouldn't work. However, you would most likely need to NAT on the machine running the Fortinet client.