|
 |
a0a3b4 |
From a48ea27debb926a30810c9f1a42f096494c727e2 Mon Sep 17 00:00:00 2001
|
|
|
a0a3b4 |
From: Harald Hoyer <harald@redhat.com>
|
|
|
a0a3b4 |
Date: Mon, 29 Feb 2016 14:52:16 +0100
|
|
|
a0a3b4 |
Subject: [PATCH] network/dhclient-script.sh: add classless-static-routes
|
|
|
a0a3b4 |
support
|
|
|
a0a3b4 |
|
|
|
a0a3b4 |
https://bugzilla.redhat.com/show_bug.cgi?id=1260955
|
|
|
a0a3b4 |
---
|
|
|
49e6a8 |
modules.d/40network/dhclient-script.sh | 48 ++++++++++++++++++++++++++
|
|
|
49e6a8 |
modules.d/40network/dhclient.conf | 5 ++-
|
|
|
a0a3b4 |
2 files changed, 52 insertions(+), 1 deletion(-)
|
|
|
a0a3b4 |
|
|
|
a0a3b4 |
diff --git a/modules.d/40network/dhclient-script.sh b/modules.d/40network/dhclient-script.sh
|
|
|
1755ca |
index 6d4b9dd1..95538585 100755
|
|
|
a0a3b4 |
--- a/modules.d/40network/dhclient-script.sh
|
|
|
a0a3b4 |
+++ b/modules.d/40network/dhclient-script.sh
|
|
|
a0a3b4 |
@@ -95,6 +95,51 @@ setup_interface6() {
|
|
|
a0a3b4 |
[ -n "$hostname" ] && echo "echo ${hostname%.$domain}${domain:+.$domain} > /proc/sys/kernel/hostname" > /tmp/net.$netif.hostname
|
|
|
a0a3b4 |
}
|
|
|
a0a3b4 |
|
|
|
a0a3b4 |
+function parse_option_121() {
|
|
|
a0a3b4 |
+ while [ $# -ne 0 ]; do
|
|
|
a0a3b4 |
+ mask="$1"
|
|
|
a0a3b4 |
+ shift
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
+ # Is the destination a multicast group?
|
|
|
a0a3b4 |
+ if [ $1 -ge 224 -a $1 -lt 240 ]; then
|
|
|
a0a3b4 |
+ multicast=1
|
|
|
a0a3b4 |
+ else
|
|
|
a0a3b4 |
+ multicast=0
|
|
|
a0a3b4 |
+ fi
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
+ # Parse the arguments into a CIDR net/mask string
|
|
|
a0a3b4 |
+ if [ $mask -gt 24 ]; then
|
|
|
a0a3b4 |
+ destination="$1.$2.$3.$4/$mask"
|
|
|
a0a3b4 |
+ shift; shift; shift; shift
|
|
|
a0a3b4 |
+ elif [ $mask -gt 16 ]; then
|
|
|
a0a3b4 |
+ destination="$1.$2.$3.0/$mask"
|
|
|
a0a3b4 |
+ shift; shift; shift
|
|
|
a0a3b4 |
+ elif [ $mask -gt 8 ]; then
|
|
|
a0a3b4 |
+ destination="$1.$2.0.0/$mask"
|
|
|
a0a3b4 |
+ shift; shift
|
|
|
a0a3b4 |
+ else
|
|
|
a0a3b4 |
+ destination="$1.0.0.0/$mask"
|
|
|
a0a3b4 |
+ shift
|
|
|
a0a3b4 |
+ fi
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
+ # Read the gateway
|
|
|
a0a3b4 |
+ gateway="$1.$2.$3.$4"
|
|
|
a0a3b4 |
+ shift; shift; shift; shift
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
+ # Multicast routing on Linux
|
|
|
a0a3b4 |
+ # - If you set a next-hop address for a multicast group, this breaks with Cisco switches
|
|
|
a0a3b4 |
+ # - If you simply leave it link-local and attach it to an interface, it works fine.
|
|
|
a0a3b4 |
+ if [ $multicast -eq 1 ]; then
|
|
|
a0a3b4 |
+ temp_result="$destination dev $interface"
|
|
|
a0a3b4 |
+ else
|
|
|
a0a3b4 |
+ temp_result="$destination via $gateway dev $interface"
|
|
|
a0a3b4 |
+ fi
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
+ echo "/sbin/ip route add $temp_result"
|
|
|
a0a3b4 |
+ done
|
|
|
a0a3b4 |
+}
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
case $reason in
|
|
|
a0a3b4 |
PREINIT)
|
|
|
a0a3b4 |
echo "dhcp: PREINIT $netif up"
|
|
|
a0a3b4 |
@@ -129,6 +174,9 @@ case $reason in
|
|
|
a0a3b4 |
{
|
|
|
a0a3b4 |
echo '. /lib/net-lib.sh'
|
|
|
a0a3b4 |
echo "setup_net $netif"
|
|
|
a0a3b4 |
+ if [ -n "$new_classless_static_routes" ]; then
|
|
|
a0a3b4 |
+ modify_routes add "$(parse_option_121 $new_classless_static_routes)"
|
|
|
a0a3b4 |
+ fi
|
|
|
a0a3b4 |
echo "source_hook initqueue/online $netif"
|
|
|
a0a3b4 |
[ -e /tmp/net.$netif.manualup ] || echo "/sbin/netroot $netif"
|
|
|
a0a3b4 |
echo "rm -f -- $hookdir/initqueue/setup_net_$netif.sh"
|
|
|
a0a3b4 |
diff --git a/modules.d/40network/dhclient.conf b/modules.d/40network/dhclient.conf
|
|
|
1755ca |
index dbf58821..7b067632 100644
|
|
|
a0a3b4 |
--- a/modules.d/40network/dhclient.conf
|
|
|
a0a3b4 |
+++ b/modules.d/40network/dhclient.conf
|
|
|
a0a3b4 |
@@ -1,3 +1,6 @@
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
+option classless-routes code 121 = array of unsigned integer 8;
|
|
|
a0a3b4 |
+
|
|
|
a0a3b4 |
request subnet-mask, broadcast-address, time-offset, routers,
|
|
|
a0a3b4 |
domain-name, domain-name-servers, domain-search, host-name,
|
|
|
a0a3b4 |
- root-path, interface-mtu;
|
|
|
a0a3b4 |
+ root-path, interface-mtu classless-routes;
|