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#!/bin/sh
[ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1
set_classless_routes() {
local max=128
local type
while [ -n "$1" -a -n "$2" -a $max -gt 0 ]; do
[ ${1##*/} -eq 32 ] && type=host || type=net
echo "udhcpc: adding route for $type $1 via $2"
route add -$type "$1" gw "$2" dev "$interface"
max=$(($max-1))
shift 2
done
}
setup_interface() {
echo "udhcpc: ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}"
ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}
[ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "255.255.255.255" ] && {
echo "udhcpc: setting default routers: $router"
local valid_gw=""
for i in $router ; do
route add default gw $i dev $interface
valid_gw="${valid_gw:+$valid_gw|}$i"
done
eval $(route -n | awk '
/^0.0.0.0\W{9}('$valid_gw')\W/ {next}
/^0.0.0.0/ {print "route del -net "$1" gw "$2";"}
')
}
# CIDR STATIC ROUTES (rfc3442)
[ -n "$staticroutes" ] && set_classless_routes $staticroutes
[ -n "$msstaticroutes" ] && set_classless_routes $msstaticroutes
}
applied=
case "$1" in
deconfig)
ifconfig "$interface" 0.0.0.0
;;
renew)
setup_interface update
;;
bound)
setup_interface ifup
;;
esac
# user rules
[ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
exit 0
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