#!/bin/sh

case $reason in
  PREINIT)

# Bring the interface up, if necessary

    ifconfig $interface 0.0.0.0 up
  ;;

  BOUND|RENEW|REBIND|REBOOT)
    if [ "$old_host_name"           != "$new_host_name"           ] || \
       [ "$old_ip_address"          != "$new_ip_address"          ] || \
       [ "$old_subnet_mask"         != "$new_subnet_mask"         ] || \
       [ "$old_broadcast_address"   != "$new_broadcast_address"   ] || \
       [ "$old_routers"             != "$new_routers"             ] || \
       [ "$old_domain_name_servers" != "$new_domain_name_servers" ]; then

# Configure the interface

      ifconfig $interface inet $new_ip_address netmask $new_subnet_mask broadcast $new_broadcast_address up

# Set default gateway

      if [ -n "$new_routers" ]; then
        route flush
        route add default $new_routers
      fi

# Set hostname

      if [ -n "$new_host_name" ]; then
        hostname $new_host_name
      fi

# Create a new /etc/resolv.conf

      if [ -n "$new_domain_name_servers" ]; then
        echo "# Generated automatically by dhclient" >/etc/resolv.conf

        for dns in $new_domain_name_servers; do
          echo "nameserver $dns" >>/etc/resolv.conf
        done
      fi
    fi
  ;;

  EXPIRE|FAIL|RELEASE)
    if [ $old_expiry -gt 946713600 ]; then
      ifconfig $interface down
    fi
  ;;
esac