Default Tether default route

Hi there,

I tend to use my phone for tethering while I'm on customer sites in order to gain access to my company's VPN service.

While im connected in this way, my phone propagates a second default route to my laptop which tends to take precedence and usually means I can't connect to hosts on the customer's network which aren't on the same network segment as my laptop.

This means I'm usually having to manually remove the default route, and manually add in static routes to the VPN host address.

Is there any way I can set the phone not to propagate the default route, and instead propagate manual fixed routes?