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grml-sniff: disable IPv6 to avoid neighbor solicitation/multicast traffic
[grml-network.git]
/
sbin
/
grml-sniff
diff --git
a/sbin/grml-sniff
b/sbin/grml-sniff
index
cf41833
..
cbb8ec1
100755
(executable)
--- a/
sbin/grml-sniff
+++ b/
sbin/grml-sniff
@@
-16,18
+16,13
@@
usage_info()
einfo "Configure via $CONFIG_FILE - see man 8 grml-sniff" ; eend 0
}
einfo "Configure via $CONFIG_FILE - see man 8 grml-sniff" ; eend 0
}
-if ! [ -r "$CONFIG_FILE" ] ; then
- eerror "$CONFIG_FILE could not be read."
- exit 1
-fi
-
-. "$CONFIG_FILE"
-
-if [ -z "$BRIDGE_DEVICES" ] ; then
- eerror "Bridge devices (\$BRIDGE_DEVICES) not set in $CONFIG_FILE"
- exit 1
+if [ -r "$CONFIG_FILE" ] ; then
+ . "$CONFIG_FILE"
+else
+ ewarn "Could not read $CONFIG_FILE"
fi
fi
+# defaults if unconfigured
[ -n "$BRCTL" ] || BRCTL='brctl'
[ -n "$BRIDGE_NAME" ] || BRIDGE_NAME='br0'
[ -n "$BRIDGE_DEVICES" ] || BRIDGE_DEVICES='eth0 eth1'
[ -n "$BRCTL" ] || BRCTL='brctl'
[ -n "$BRIDGE_NAME" ] || BRIDGE_NAME='br0'
[ -n "$BRIDGE_DEVICES" ] || BRIDGE_DEVICES='eth0 eth1'
@@
-50,6
+45,10
@@
case "$1" in
check4root || exit 1
einfo "Starting sniffing setup"
eindent
check4root || exit 1
einfo "Starting sniffing setup"
eindent
+
+ einfo "Disabling IPv6 to avoid neighbor solicitation/multicast traffic"
+ echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6
+
einfo "Creating bridge device"
brctl addbr "$BRIDGE_NAME"
eend $?
einfo "Creating bridge device"
brctl addbr "$BRIDGE_NAME"
eend $?
@@
-103,6
+102,9
@@
case "$1" in
ifconfig "$BRIDGE_NAME" down || /bin/true
brctl delbr "$BRIDGE_NAME"
eend $?
ifconfig "$BRIDGE_NAME" down || /bin/true
brctl delbr "$BRIDGE_NAME"
eend $?
+
+ einfo "Re-enabling IPv6"
+ echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6
eoutdent
;;
eoutdent
;;