# set classless routes based on the format specified in RFC3442
# e.g.:
# new_rfc3442_classless_static_routes='24 192 168 10 192 168 1 1 8 10 10 17 66 41'
# specifies the routes:
# 192.168.10.0/24 via 192.168.1.1
# 10.0.0.0/8 via 10.10.17.66.41

RUN="yes"


if [ "$RUN" = "yes" ]; then
if [ -n "$new_rfc3442_classless_static_routes" ]; then
if [ "$reason" = "BOUND" ] || [ "$reason" = "REBOOT" ]; then

set -- $new_rfc3442_classless_static_routes

while [ $# -gt 0 ]; do
net_length=$1
via_arg=''

case $net_length in
32|31|30|29|28|27|26|25)
net_address="${2}.${3}.${4}.${5}"
gateway="${6}.${7}.${8}.${9}"
shift 9
;;
24|23|22|21|20|19|18|17)
net_address="${2}.${3}.${4}.0"
gateway="${5}.${6}.${7}.${8}"
shift 8
;;
16|15|14|13|12|11|10|9)
net_address="${2}.${3}.0.0"
gateway="${4}.${5}.${6}.${7}"
shift 7
;;
8|7|6|5|4|3|2|1)
net_address="${2}.0.0.0"
gateway="${3}.${4}.${5}.${6}"
shift 6
;;
0) # default route
net_address="0.0.0.0"
gateway="${2}.${3}.${4}.${5}"
shift 5
;;
*) # error
return 1
;;
esac

# take care of link-local routes
if [ "${gateway}" != '0.0.0.0' ]; then
via_arg="via ${gateway}"
fi

# set route (ip detects host routes automatically)
ip -4 route add "${net_address}/${net_length}" \
${via_arg} dev "${interface}" >/dev/null 2>&1
done
fi
fi
fi