/etc/config/network
:
config route
option interface 'vpn'
option target '0.0.0.0'
option netmask '0.0.0.0'
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.4.210 172.16.162.254 255.255.255.255 UGH 0 0 0 eth0.2
10.10.10.1 0.0.0.0 255.255.255.255 UH 0 0 0 pptp-vpn
172.16.162.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0.2
192.168.31.0 0.0.0.0 255.255.255.0 U 0 0 0 br-lan
192.168.30.0 0.0.0.0 255.255.255.0 U 0 0 0 br-guest
0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 pptp-vpn <-- !!!
0.0.0.0 172.16.162.254 0.0.0.0 UG 50 0 0 eth0.2