I have a Routerboard with two independent, masqueraded WAN connections - main and backup. I would like to set up a PPTP Client interface, but to route it through the backup WAN despite of the primary WAN availability.
Which would be the most elegant way to do that?
1. add routing table with route to last resort:
/ip route add gateway=ip_gatway_wan2
2.Add bridge and set ip address for pptp server / bridge-pptp
3.On pptp profile select this bridge
4. Add route rule this network to learn the wan2 routing table:
/ip route rule add src-address=pptp network
interface=bridge-pptp action=lookup table=wan2
5.Add snat for pptp network to be nated with wan2 ip address:
/ip firewall nat add chain=srcnat src-address=pptp network