Synnefo » snf-network

#!/bin/bash

MAC2EUI64=/usr/bin/mac2eui64

source /etc/default/snf-network

host=$(hostname)

domain=$(hostname -d)

FIRST=0

LAST=$((GANETI_INSTANCE_NIC_COUNT - 1))

for idx in $(seq $FIRST $LAST); do

  ip=GANETI_INSTANCE_NIC${idx}_IP

  mac=GANETI_INSTANCE_NIC${idx}_MAC

  mode=GANETI_INSTANCE_NIC${idx}_MODE

  link=GANETI_INSTANCE_NIC${idx}_LINK

  network=GANETI_INSTANCE_NIC${idx}_NETWORK_SUBNET

  subnet6=GANETI_INSTANCE_NIC${idx}_NETWORK_SUBNET6

  tags=GANETI_INSTANCE_NIC${idx}_NETWORK_TAGS

  eval IP=\$$ip

  eval MAC=\$$mac

  eval MODE=\$$mode

  eval LINK=\$$link

  eval NETWORK=\$$network

  eval SUBNET6=\$$subnet6

  eval TAGS=\$$tags

  for tag in $TAGS; do

    case $tag in

    $IP_LESS_ROUTED_TAG)

      uplink=$(ip route list table $LINK | grep "default via" | awk '{print $5}')

      uplink6=$(ip -6 route list table $LINK | grep "default via" | awk '{print $5}')

      eui64=$($MAC2EUI64 $MAC $SUBNET6 2>/dev/null)

      if [ "$GANETI_INSTANCE_PRIMARY" = "$host.$domain" ]; then

        # This runs on the source node

        hooks-log $0 "ip -6 neigh del proxy $eui64 dev $uplink6"

        ip -6 neigh del proxy $eui64 dev $uplink6 >/dev/null 2>&1

      else

        # This runs on the target node

        # Send GARP from host to upstream router to speed up mac change for the VMs IP

        hooks-log $0 "arping  -c3 -I $uplink -U $IP"

        echo 1 > /proc/sys/net/ipv4/ip_nonlocal_bind

        arping  -c3 -I $uplink -U $IP

        echo 0 > /proc/sys/net/ipv4/ip_nonlocal_bind

        # Send Unsolicited Neighbor Advertisement to speed up nd change for the VMs IP

        hooks-log $0 "ndsend $eui64 $uplink6"

        ndsend $eui64 $uplink6

      fi

    ;;

    esac

  done

done

exit 0