-#!/bin/sh
+#!/bin/bash
#
-# Copyright (C) 2011 Google Inc.
+# Copyright (C) 2011, 2012 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# 02110-1301, USA.
if [ -z "$INTERFACE" ]; then
- echo "No network interface specified"
- exit 1
+ echo "No network interface specified"
+ exit 1
fi
if [ -z "$MODE" ]; then
- echo "MODE not specified"
- exit 1
+ echo "MODE not specified"
+ exit 1
fi
# Execute the user-supplied network script, if applicable
if [ -x "@SYSCONFDIR@/ganeti/kvm-vif-bridge" ]; then
- exec @SYSCONFDIR@/ganeti/kvm-vif-bridge
+ exec @SYSCONFDIR@/ganeti/kvm-vif-bridge
fi
-ip link set $INTERFACE up
-
if [ "$MODE" = "bridged" ]; then
- # Connect the interface to the bridge
- brctl addif $BRIDGE $INTERFACE
+ # Fix the autogenerated MAC to have the first octet set to "fe"
+ # to discourage the bridge from using the TAP dev's MAC
+ FIXED_MAC=$(ip link show $INTERFACE | \
+ awk '{if ($1 == "link/ether") printf("fe%s",substr($2,3,15))}')
+ ip link set $INTERFACE address $FIXED_MAC
+
+ ip link set $INTERFACE up
+ ip link set $INTERFACE mtu $(</sys/class/net/${BRIDGE}/mtu)
+
+ # Connect the interface to the bridge
+ brctl addif $BRIDGE $INTERFACE
else
- if [ -z "$IP" ]; then
- echo "Routed NIC but no IP address specified"
- exit 1
- fi
+ ip link set $INTERFACE up
+
+ if [ -z "$IP" ]; then
+ echo "Routed NIC but no IP address specified"
+ exit 1
+ fi
- # Route traffic targeted at the IP to the interface
- if [ -n "$LINK" ]; then
- while ip rule del dev $INTERFACE; do :; done
- ip rule add dev $INTERFACE table $LINK
- ip route replace $IP table $LINK proto static dev $INTERFACE
+ # Route traffic targeted at the IP to the interface
+ if [ -n "$LINK" ]; then
+ while ip rule del dev $INTERFACE; do :; done
+ ip rule add dev $INTERFACE table $LINK
+ ip route replace $IP table $LINK proto static dev $INTERFACE
- else
- ip route replace $IP proto static dev $INTERFACE
- fi
+ else
+ ip route replace $IP proto static dev $INTERFACE
+ fi
- if [ -d "/proc/sys/net/ipv4/conf/$INTERFACE" ]; then
- echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/proxy_arp
- echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/forwarding
- fi
+ if [ -d "/proc/sys/net/ipv4/conf/$INTERFACE" ]; then
+ echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/proxy_arp
+ echo 1 > /proc/sys/net/ipv4/conf/$INTERFACE/forwarding
+ fi
- if [ -d "/proc/sys/net/ipv6/conf/$INTERFACE" ]; then
- echo 1 > /proc/sys/net/ipv6/conf/$INTERFACE/proxy_ndp
- echo 1 > /proc/sys/net/ipv6/conf/$INTERFACE/forwarding
- fi
+ if [ -d "/proc/sys/net/ipv6/conf/$INTERFACE" ]; then
+ echo 1 > /proc/sys/net/ipv6/conf/$INTERFACE/proxy_ndp
+ echo 1 > /proc/sys/net/ipv6/conf/$INTERFACE/forwarding
+ fi
fi