#!/usr/bin/bash
#########################################################################
# Plumb multiple IP addresses on one interface                          #
#                                                                       #
# Plumb up to 255 IP addresses per interface.                           #
# Invoke ndd to enable up to 8192 virtual interfaces:                   #
#   ndd -set /dev/ip ip_addrs_per_if 1025                               #
#                                                                       #
# Create an /etc/hostname.IF:N for each interface, where IF=interface   #
#   type and N=number.                                                  #
#                                                                       #
# Called from /etc/rc2.d/S99multi-ip                                    #
#########################################################################
#
#ident  "@(#)multi-ip      0.9    04/02/2005 Amalgamated Smike smike.com"

# Loop this bad boy if you have a metric boatload of IPs to configure

INTERFACE1="dmfe0"          ##Set the type of interface (hme0, dmfe0, etc.)
INTERFACE2="dmfe1"
IP1="10.0.0.1"          ##Set the IP addresses
IP2="10.0.0.2"
IP3="10.0.0.3"

if [ -f /etc/hostname.$INTERFACE1:1 ];
  then
    case $1 in              ##Add or delete desired number of interface IPs
    'start')
      echo "Bringing up interface $INTERFACE1:1"
      ifconfig $INTERFACE1:1 $IP1 up
      echo "Bringing up interface $INTERFACE1:2"
      ifconfig $INTERFACE1:2 $IP2 up
      echo "Bringing up interface $INTERFACE1:3"
      ifconfig $INTERFACE1:3 $IP3 up
    ;;
    'stop')
      echo "Stopping interface $INTERFACE1:1"
      ifconfig $INTERFACE1:1 $IP1 down
      echo "Stopping interface $INTERFACE1:2"
      ifconfig $INTERFACE1:2 $IP2 down
      echo "Stopping interface $INTERFACE1:3"
      ifconfig $INTERFACE1:3 $IP3 down
    ;;

    '')
      echo
      echo "Syntax: $0 start|stop"
      echo
    esac
  else
    echo
    echo "$0 exiting: /etc/hostname.$INTERFACE1:1 not found!"
    echo
fi