I'm trying to use the PPTP client on a RT-n66u on shibby. I don't want to route all my traffic through the tunnel, only to several specific remote networks.
The GUI only allows 1 remote network to be configured. I can ssh into the router and add routes through ppp0 after the tunnel is up, and they work fine, but the routes disappear if the tunnel is stopped and restarted.
Is there a more persistent way of doing this? AsusWRT-merlin allows replacement of scripts under /etc with jffs but I'm new to Tomato so I don't know how custom scripts etc. work on it.