Posts by mbedy

Problem is with OpenVPN deamon which tries to modify the routing table when establishing new VPN, see here:

# /run/openvpn.log

...

Tue Jan 28 15:54:02 2020 /sbin/ip route add 195.20.170.27/32 via 192.168.211.2

Tue Jan 28 15:54:02 2020 /sbin/ip route del 0.0.0.0/0

Tue Jan 28 15:54:02 2020 /sbin/ip route add 0.0.0.0/0 via 10.45.0.1

ip: RTNETLINK answers: File exists

Tue Jan 28 15:54:02 2020 ERROR: Linux route add command failed: external program exited with error status: 2

OpenVPN is not able to install a new defailt-route (via VPN tunnel) because the previous one has not been removed from the routeing table. When it tries to install a new default-route, it fails with an error.

Hello,

i hit and observed this problem when i try to run openvpn client.

I have observerd an issue when openvpn client (startup-script) try to remove the default-route from a routing table. Later i tried it manually with the following commands, see bellow. The goal was to remove a default-route from the routing table, which did not happen. The IP address of LAN is configured in manual mode as 192.168.211.130/24, gateway 192.168.211.2.

LibreELEC:/usr/sbin # ip route

default via 192.168.211.2 dev eth0

10.45.0.0/24 dev tun0 scope link src 10.45.0.2

192.168.211.0/24 dev eth0 scope link src 192.168.211.130

192.168.211.2 dev eth0 scope link

195.20.170.27 via 192.168.211.2 dev eth0

>> default-route goes via 192.168.211.2

>> ATTEMPT #1: here i will try to remove default-route from routing table:

LibreELEC:/usr/sbin # ip route del default

LibreELEC:/usr/sbin # ip route

default via 192.168.211.2 dev eth0

10.45.0.0/24 dev tun0 scope link src 10.45.0.2

192.168.211.0/24 dev eth0 scope link src 192.168.211.130

192.168.211.2 dev eth0 scope link

195.20.170.27 via 192.168.211.2 dev eth0

>> default-route has not been removed from the routing table, it is still there !!!

>> ATTEMPT #2:

LibreELEC:/usr/sbin # ip route del default via 192.168.211.2 dev eth0

LibreELEC:/usr/sbin # ip route

default via 192.168.211.2 dev eth0

10.45.0.0/24 dev tun0 scope link src 10.45.0.2

192.168.211.0/24 dev eth0 scope link src 192.168.211.130

192.168.211.2 dev eth0 scope link

195.20.170.27 via 192.168.211.2 dev eth0

>> default-route has not been removed from the routing table, it is still there !!! Why???

IP commnad is implemented with busybox utility (/usr/bin/busybox ip)

LibreELEC:~ # busybox

BusyBox v1.31.0 (2019-11-22 22:56:17 EST) multi-call binary.

LibreElec Kodi 18.5 Git: 18.5-Leia

Compiled: 2019-11-23

Tested images: Virtual image (for Vmware), image for Odroid-C2