Error when starting coova-chilli on openwrt

Question

I deploy CoovaChilli on my new configured openWRT firmware router.

opkg update
opkg install coova-chilli
opkg install kmod-tun

The problem is that every time I try to start chilli /usr/bin/chilli I'm getting the following error:

coova-chilli[20987]: options.c: 181: could not generate configuration (/var/run/chilli.20987.cfg.bin)

I noticed that /var is a link to /tmp folder so I done the two following techniques to overcome with the problem but nothing:

1. Ensure that it has permission to write at /var/run: chmod a+rwx /var/run -R
2. replace the /var link with a /var folder. (maybe a little risky!)

But nothing happened, so the problem is somewhere else, any hint accepted.

Answer 1

I found that the problem is the configuration:

1. I change /etc/chilli/up.sh and down.sh the line from

UNDO_FILE=/var/run/chilli.$TUNTAP.sh

to

UNDO_FILE=/tmp/chilli.$TUNTAP.sh

And as I am working and changing things, I found out that when I have a misconfigurion at /etc/chilli/defaults then throws the same error.

Answer 2

Above mentioned error will occur when chilli configuration is wrong

For me it solved after replacing the below conf in /etc/config/chilli

config chilli
    option ipup="/etc/chilli/up.sh"
    option ipdown="/etc/chilli/down.sh"
    option radiusserver1="your radius server"
    option radiusserver2="your radius server"
    option radiussecret="your secret"
    option dhcpif="br-lan"
    option uamserver="hotspot login URL"
    option dns1="8.8.8.8"
    option uamsecret="uam secret"
    option net="192.168.182.0/24"
    option radiusnasid="nasid"

And restart chilli /etc/init.d/chilli restart