diff options
| author |   Robin H. Johnson <robbat2@gentoo.org> | 2016-10-24 15:25:08 -0700 |
|---|---|---|
| committer | Robin H. Johnson <robbat2@gentoo.org> | 2016-10-24 15:25:08 -0700 |
| commit | 8a92e2a697c2f250e39917442a365f8e666da3fb (patch) | |
| tree | 4d71265e59bdd398d674b741a03f4e398906e97a /sh/udhcpc-hook.sh.in | |
| parent | doc: resolvconf-gentoo is now openresolv. (diff) | |
| download | netifrc-8a92e2a697c2f250e39917442a365f8e666da3fb.tar.gz netifrc-8a92e2a697c2f250e39917442a365f8e666da3fb.tar.bz2 netifrc-8a92e2a697c2f250e39917442a365f8e666da3fb.zip | |
sh/udhcpc-hook.sh: classless static routes
Support RFC3442 (DHCP classless static routes).
Thanks to Jack Suter <gentoo-bugs@suter.io>.
X-Gentoo-Bug: 524156
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=524156
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Diffstat (limited to 'sh/udhcpc-hook.sh.in')
| -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 |