We've been trying to solve this seemingly simple routing problem for days. We are trying to route traffic through an OpenVPN tunnel. Specifically, traffic to 10.0.1.136 should be routed through our tunnel interface. Thus we've added the route " 10.0.1.0/24 via 10.0.2.1 dev tun0 metric 101" via ip route. However, as you can see below, if we do an "ip route get 10.0.1.136", the eth0 interface is selected.
We have tried:
- Deleting the cache
- Removing the default route
- Adding a route specifically for 10.0.1.136
- Making the route "static"
What are we missing? Are there any obvious problems in our routing table?
xx@xx:~$ ip route
default via 192.168.10.150 dev eth0
10.0.0.2 via 10.0.2.1 dev tun0 metric 101
10.0.1.0/24 via 10.0.2.1 dev tun0 metric 101
10.0.2.0/24 dev tun0 proto kernel scope link src 10.0.2.50
169.254.0.0/16 dev eth0 scope link metric 1000
172.16.0.0/16 via 172.16.0.100 dev tap0
192.168.10.0/24 dev eth0 proto kernel scope link src 192.168.10.100
192.168.20.0/24 via 192.168.10.1 dev eth0
xx@x:~$ sudo ip route get 10.0.1.136
10.0.1.136 via 192.168.10.150 dev eth0 src 192.168.10.100
cache
xx@xx:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 44:8a:5b:57:a7:68
inet addr:192.168.10.100 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::468a:5bff:fe57:a768/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:711182 errors:0 dropped:237 overruns:0 frame:0
TX packets:715366 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:88619834 (88.6 MB) TX bytes:86802607 (86.8 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:12623 errors:0 dropped:0 overruns:0 frame:0
TX packets:12623 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1388042 (1.3 MB) TX bytes:1388042 (1.3 MB)
tap0 Link encap:Ethernet HWaddr 16:20:92:30:1c:9d
inet addr:172.16.0.100 Bcast:172.16.0.255 Mask:255.255.255.0
inet6 addr: fe80::1420:92ff:fe30:1c9d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:4759 errors:0 dropped:183 overruns:0 frame:0
TX packets:6654 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:497307 (497.3 KB) TX bytes:469035 (469.0 KB)
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.0.2.50 P-t-P:10.0.2.50 Mask:255.255.255.0
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:264830 errors:0 dropped:0 overruns:0 frame:0
TX packets:259659 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:21013005 (21.0 MB) TX bytes:23064408 (23.0 MB)
