disabling dynamic routes

hi everyone

i have a rb433 on which i need to do source nating with masquarade for 3 pppoe account

the 3 pppoe accounts should be connected througth the 3 ethernet interface

than the nating should be from ether1 to wlan1 , ether2 to wlan2 and ether3 to wlan3

the problem is that when i try to connect these 3 pppoe the dynamic routing is ruining everything

so any idea if possible to disable the dynamic routing or any other way to do my project with a single routerboard

thanks for every reply

If routing is ruined by default route added with PPPoE interface, you can disable default gateway add, by
interface pppoe-client set add-default-route=no

If routing is ruined by the IP addresses added to the tunnel, when appropriate entry is added to the routing table. Reconsider your network structure, whether IP addresses assigned to tunnels, IP address configured on the router or static routings rules you have.

problem should be from the default route added with PPPoE interface
i ll be trying your solution very soon and i ll feed u back
thank u for your help