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# Set dhcp.<iface>.routeN.dest and dhcp.<iface>.routeN.via properties with
# the static routes provided by the DHCP server.
# CAUTION
#
# Placing this in the hooks directory will allow DHCP servers to push static
# routes to ALL of the interfaces that use the directory.
#
# To avoid this, create separate dhcpcd configurations, one for the interfaces
# that should accept static routes and another for the interfaces that should
# not accept static routes routes.
# Add this script in the hooks directory only for the interfaces that should
# accept static routes.
#
# Add "nooption classless_static_routes, static_routes" to the dhcpcd.conf
# file for the interfaces that should not accept static routes. Do not add the
# script to the hooks directory.
next_set_interface=1
set_route_props_from_list()
{
while [[ $# -ge 2 ]]; do
setprop dhcp.${interface}.route${next_set_interface}.dest $1
shift
setprop dhcp.${interface}.route${next_set_interface}.via $1
shift
next_set_interface=$(($next_set_interface + 1))
done
}
unset_route_props()
{
next_clear_interface=1
while [[ ! -z "$(getprop dhcp.${interface}.route${next_clear_interface}.dest)" ]]; do
setprop dhcp.${interface}.route${next_clear_interface}.dest ""
setprop dhcp.${interface}.route${next_clear_interface}.via ""
next_clear_interface=$(($next_clear_interface + 1))
done
while [[ ! -z "$(getprop dhcp.${interface}.route${next_clear_interface}.via)" ]]; do
setprop dhcp.${interface}.route${next_clear_interface}.dest ""
setprop dhcp.${interface}.route${next_clear_interface}.via ""
next_clear_interface=$(($next_clear_interface + 1))
done
}
set_route_props()
{
unset_route_props
if [[ ! -z "${new_classless_static_routes}" ]]; then
set_route_props_from_list ${new_classless_static_routes}
else
set_route_props_from_list ${new_static_routes}
fi
}
case "${reason}" in
BOUND|INFORM|REBIND|REBOOT|RENEW|TIMEOUT) set_route_props;;
EXPIRE|FAIL|IPV4LL|RELEASE|STOP) unset_route_props;;
esac
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