diff options
| -rw-r--r-- | sh/udhcpc-hook.sh.in | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/sh/udhcpc-hook.sh.in b/sh/udhcpc-hook.sh.in index 0744a04..c756061 100644 --- a/sh/udhcpc-hook.sh.in +++ b/sh/udhcpc-hook.sh.in @@ -61,11 +61,35 @@ update_interface() ifconfig "${interface}" ${ip} ${broadcast} ${netmask} ${mtu} } +update_classless_routes() +{ + if [ -n "${staticroutes}" ] ; then + max_routes=128 + metric= + [ -n "${IF_METRIC}" ] && metric="metric ${IF_METRIC}" + while [ -n "$1" -a -n "$2" -a $max_routes -gt 0 ]; do + gw_arg= + if [ "$2" != '0.0.0.0' ]; then + gw_arg="gw $2" + fi + + [ ${1##*/} -eq 32 ] && type=host || type=net + route add -$type "$1" ${gw_arg} ${metric} dev "${interface}" + max=$(($max-1)) + shift 2 + done + fi +} update_routes() { peer_var "${PEER_ROUTERS}" && return - if [ -n "${router}" ] ; then + # RFC 3442 + [ -n "${staticroutes}" ] && update_classless_routes $staticroutes + + # If the DHCP server returns both a Classless Static Routes option and + # a Router option, the DHCP client MUST ignore the Router option. + if [ -n "${router}" -a -z "${staticroutes}" ] ; then metric= [ -n "${IF_METRIC}" ] && metric="metric ${IF_METRIC}" for i in ${router} ; do |