Need help in configurnig Persistent Static ROutes in Debian (Wheezy) Linux Machine


Situation 1 - One Network INterface - eth0

I have configured some persistent routes in /etc/network/interfaces file (As mentioned below)

post-up ip route add <NW>/32 via <GW> dev eth0
post-up ip route add <NW>/32 via <GW> dev eth0

Note:- Removed Network and Gateway Address

and they are working perfectly fine

when I give command "route" - it shows in the list.


Situation 2 - two Network INterfaces - eth0.XXX and eth0.xxx , configured virtually (wherein x represents por no. )

I am using the same configuration as mentioned above in /etc/network/interfaces file.

But when I reloading the service, its not coming when i give route command

below is the current configuration


auto lo
iface lo inet loopback

auto eth0.XXXX
iface eth0.XXXX inet static
address NW
netmask NM
gateway GW
vlan_raw_device eth0

auto eth0.XXX
iface eth0.XXX inet static
address NW
netmask NM
gateway GW

post-up ip route add <NW>/32 via <GW> dev eth0
post-up ip route add <NW>/32 via <GW> dev eth0

vlan_raw_device eth0

allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf

pl. help - that what is going wrong in this.

Looks like you are adding the routes to the lower device and not the eth0.XXX or eth0.XXXX devices where your IP communication would happen.

I already tried putting -
post-up ip route add <NW>/32 via <GW> dev eth0.xxx
post-up ip route add <NW>/32 via <GW> dev eth0.xxx

but not working

So if you run the commands that you have in the post-up do they run from the CLI manually on your interfaces?

yes, if I run command - "ip route add <NW>/32 via <GW> dev eth0.xxx" on terminal excluding (post-up), it gets added and shows when i run route -n

I don't think you need the vlan_raw_device setting. That might be throwing some things off. I have not seen this setting used before.