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#!/bin/bash
# A script to do basic network configuration.
# Mostly written by Patrick Volkerding <volkerdi@slackware.com>.
# Modified to use /etc/rc.d/rc.inet1.conf Tue Aug 26 16:51:48 PDT 2003 <pjv>

write_config_files() {
#
############################################################################
#			  The rc.inet1.conf file.
############################################################################
#

# If we're doing loopback, we don't want 127.0.0.1 and 255.255.255.0 in
# rc.inet1.conf... it's better to leave the values null. However, since
# we use the IP in other places, we need to make a copy for here.
RCIPCOPY=$IPADDR
RCMASKCOPY=$NETMASK
RCIP6COPY=$IPADDR6
RCPREFIXCOPY=$PREFIX6
if [ "$RCIPCOPY" = "127.0.0.1" ]; then
  RCIPCOPY=""
  RCMASKCOPY=""
fi
if [ "$RCIP6COPY" = "::1" ]; then
  RCIP6COPY=""
  RCPREFIXCOPY=""
fi

# echo "Creating /$RC..."
/bin/cat << ENDFILE > $RC
# /etc/rc.d/rc.inet1.conf
#
# This file contains the configuration settings for network interfaces.
#
# If USE_DHCP[interface] is set to "yes", this overrides any other settings.
# If you don't have an interface, leave the settings null ("").
#
# You can configure network interfaces other than eth0,eth1... by setting
# IFNAME[interface] to the interface's name. If IFNAME[interface] is unset
# or empty, it is assumed you're configuring eth<interface>.
#
# Several other parameters are available; the end of this file contains a
# comprehensive set of examples.
#
# Important note for IPv6 stateless auto configuration (SLAAC) users:
# From Slackware 15.0 onwards, you need to set USE_SLAAC[0]="yes" below.

# =============================================================================

# IPv4 config information for eth0:
ENDFILE

if [ -n "$VLAN" ]; then
  echo "IFNAME[0]=\"eth0$VLAN\"" >>$RC
fi

/bin/cat << ENDFILE >> $RC
IPADDR[0]="$RCIPCOPY"
NETMASK[0]="$RCMASKCOPY"
IPALIASES[0]=""
USE_DHCP[0]="$USE_DHCP"
DHCP_HOSTNAME[0]="$DHCP_HOSTNAME"
# IPv6 config information for eth0:
IP6ADDRS[0]="`if [ ! \"$RCIP6COPY\" = \"\" ]; then echo \"$RCIP6COPY/$RCPREFIXCOPY\"; fi`"
USE_SLAAC[0]="$USE_SLAAC"
USE_DHCP6[0]="$USE_DHCP6"

# IPv4 config information for eth1:
IPADDR[1]=""
NETMASK[1]=""
IPALIASES[1]=""
USE_DHCP[1]=""
DHCP_HOSTNAME[1]=""
# IPv6 config information for eth1:
IP6ADDRS[1]=""
USE_SLAAC[1]=""
USE_DHCP6[1]=""

# IPv4 config information for eth2:
IPADDR[2]=""
NETMASK[2]=""
IPALIASES[2]=""
USE_DHCP[2]=""
DHCP_HOSTNAME[2]=""
# IPv6 config information for eth2:
IP6ADDRS[2]=""
USE_SLAAC[2]=""
USE_DHCP6[2]=""

# IPv4 config information for eth3:
IPADDR[3]=""
NETMASK[3]=""
IPALIASES[3]=""
USE_DHCP[3]=""
DHCP_HOSTNAME[3]=""
# IPv6 config information for eth3:
IP6ADDRS[3]=""
USE_SLAAC[3]=""
USE_DHCP6[3]=""

# IPv4 default gateway IP address:
GATEWAY="$GATEWAY"
# IPv6 default gateway IP address:
GATEWAY6="$GATEWAY6"

# =============================================================================

# Example of how to configure a bond (link aggrigation) interface.
# Note the addition of the BONDNICS and BONDMODE parameters.
# BONDNICS is a space delimited list of interfaces to add to this bond.  The
# BONDNICS interfaces will be brought up and configured while bringing up the
# bond interface, so do not need to be previously defined in rc.inet1.conf.
# BONDMODE sets the bonding mode for this interface.  If not specified when
# BONDNICS has been used, the default is 'balance-rr'.
# IFOPTS is a pipe (|) delimited list of bonding module specific settings to be
# applied to the interface, and should always include the 'miimon' option when
# configuring bonding - not using this option will result in network
# degradation.  In 'active-backup' mode, the 'primary' option should also be
# supplied.  When using '802.3ad' mode, set "lacp_rate fast" for faster
# recovery from an interface failure.  In other modes, the 'xmit_hash_policy'
# should be set.  See the /usr/src/linux/Documentation/networking/bonding.txt
# file (search for "Bonding Driver Options") for the full set of options.
#IFNAME[0]="bond0"
#BONDNICS[0]="eth0 eth1"
#BONDMODE[0]="balance-rr"
#IFOPTS[0]="xmit_hash_policy layer2+3 | miimon 100"
#IPADDR[0]="192.168.0.1"
#NETMASK[0]="24"
#IPALIASES[0]=""
#USE_DHCP[0]=""
#DHCP_HOSTNAME[0]=""
#IP6ADDRS[0]=""
#USE_SLAAC[0]=""
#USE_DHCP6[0]=""

# =============================================================================

# Example of how to configure a VLAN interface:
# The VLAN ID is taken from the full interface name, which is comprised of the
# underlying interface name, a period (.) and then the VLAN ID.
# IFOPTS is a pipe (|) delimited list of VLAN module specific settings to be
# applied to the interface.  See the ip-link(8) man page (search for "VLAN Type
# Support") for details of the options available.  This option is not required
# for a standard VLAN to be configured.
#IFNAME[0]="eth0.10"
#IFOPTS[0]=""
#IPADDR[0]="192.168.10.1"
#NETMASK[0]="24"
#IPALIASES[0]=""
#USE_DHCP[0]=""
#DHCP_HOSTNAME[0]=""
#IP6ADDRS[0]=""
#USE_SLAAC[0]=""
#USE_DHCP6[0]=""

# =============================================================================

# Example of how to configure a bridge:
# Note the added "BRNICS" variable which contains a space-separated list
# of the physical or virtual network interfaces you want to add to the bridge.
# IFOPTS is a pipe (|) delimited list of bridge module specific settings to be
# applied to the interface.  See the ip-link(8) man page (search for "BRIDGE
# Type Support") for details of the options available.  This option is not
# required for a standard bridge to be configured.
#IFNAME[0]="br0"
#BRNICS[0]="eth0"
#IFOPTS[0]=""
#IPADDR[0]="192.168.0.1"
#NETMASK[0]="24"
#IPALIASES[0]=""
#USE_DHCP[0]=""
#DHCP_HOSTNAME[0]=""

# =============================================================================

# Virtual interfaces to create - these are created before any address
# configuration or bridge setup is done, so you may use these interfaces
# as IFNAME or BRNICS values. These can be tun or tap interfaces:
# adjust VIRTIFNAME and VIRTIFTYPE accordingly.
# Starting with VIRTIFNAME[0] is mandatory, and each next one must be
# incremented by one, so VIRTIFNAME[1], VIRTIFNAME[2], and so on.
# Virtual tap interface example
#VIRTIFNAME[0]="tap0"
#VIRTIFTYPE[0]="tap"
#VIRTIFUSER[0]="root"
#VIRTIFGROUP[0]="root"

# Virtual tun interface example
#VIRTIFNAME[1]="tun0"
#VIRTIFTYPE[1]="tun"
#VIRTIFUSER[1]="someuser"
#VIRTIFGROUP[1]="somegroup"

# =============================================================================

# Example config information for wlan0:
# Uncomment the lines you need and fill in your data.  You may not need all of
# these for your wireless network.
#IFNAME[4]="wlan0"
#IPADDR[4]=""
#NETMASK[4]=""
#USE_DHCP[4]="yes"
#DHCP_HOSTNAME[4]="icculus-wireless"
#DHCP_KEEPRESOLV[4]="yes"
#DHCP_KEEPNTP[4]="yes"
#DHCP_KEEPGW[4]="yes"
#DHCP_IPADDR[4]=""
#WLAN_ESSID[4]=DARKSTAR
#WLAN_MODE[4]=Managed
#WLAN_RATE[4]="54M auto"
#WLAN_CHANNEL[4]="auto"
#WLAN_KEY[4]="D5A31F54ACF0487C2D0B1C10D2"
#WLAN_IWPRIV[4]="set AuthMode=WPAPSK | set EncrypType=TKIP | set WPAPSK=96389dc66eaf7e6efd5b5523ae43c7925ff4df2f8b7099495192d44a774fda16"
#WLAN_WPA[4]="wpa_supplicant"
#WLAN_WPADRIVER[4]="wext"
#WLAN_WPAWAIT[4]=30


# =============================================================================

# Some examples of additional network parameters that you can use.
#IFNAME[4]="wlan0"              # Use a different interface name instead of
                                # the default 'eth4'
#IPALIASES[4]="192.168.5.10/24" # A space delimited list of CIDR formatted IP
                                # aliases to assign to the interface after it
                                # has come up.  If no /<prefix> is given after
                                # the IP address, /24 will be used as default.
#HWADDR[4]="00:01:23:45:67:89"  # Overrule the card's hardware MAC address
#MTU[4]=""                      # The default MTU is 1500, but you might need
                                # 1360 when you use NAT'ed IPSec traffic.
#PROMISCUOUS[4]="yes"           # Set promiscuous mode on the interface.
#DHCP_TIMEOUT[4]="15"           # The default timeout for the DHCP client to
                                # wait for server resonse is 15 seconds, but
                                # you might want a shorter or longer wait.
#DHCP_KEEPRESOLV[4]="yes"       # If you don't want /etc/resolv.conf overwritten
#DHCP_KEEPNTP[4]="yes"          # If you don't want ntp.conf overwritten
#DHCP_KEEPGW[4]="yes"           # If you don't want the DHCP server to change
                                # your default gateway
#DHCP_IPADDR[4]=""              # Request a specific IP address from the DHCP
                                # server
#DHCP_DEBUG[4]="yes"            # Make dhcpcd show verbose diagnostics
#DHCP_NOIPV4LL[4]="yes"         # Do not assign an ipv4ll address when a DHCP
                                # server is not found (ipv4ll link-local
                                # adresses in the IP range 169.254.0.0/16 are
                                # also known as "zeroconf" addresses)
#SLAAC_TIMEOUT[4]="15"          # The default timeout for auto configuration to
                                # wait for the interface to come up is 15 sec.
                                # Increase the timeout if required.
#USE_RA[4]="yes"                # Accept router advertisements even when SLAAC
                                # is disabled on the interface.
#WLAN_ESSID[4]="DARKSTAR"       # An example of how you can override _any_
                                # parameter defined in rc.wireless.conf, by
                                # prepending 'WLAN_' to the parameter's name.
                                # Useful with multiple wireless interfaces.
#WLAN_IWPRIV[4]="set AuthMode=WPAPSK | set EncrypType=TKIP | set WPAPSK=thekey"
                                # Some drivers require a private ioctl to be
                                # set through the iwpriv command. If more than
                                # one is required, you can place them in the
                                # IWPRIV parameter (separated with the pipe (|)
                                # character, see the example).
#WLAN_WPA[4]="wpa_supplicant"   # Run wpa_supplicant for WPA support
#WLAN_WPADRIVER[4]="ndiswrapper"# Tell wpa_supplicant to specifically use the
                                # ndiswrapper driver (if you leave this empty
                                # the 'wext' driver is used by default)
#WLAN_WPAWAIT[4]="30"           # In case it takes long for the WPA association
                                # to finish, you can increase the wait time
                                # (defaults to 10 seconds)

# =============================================================================

# Change this to "yes" for debugging output to stdout.
DEBUG_ETH_UP="no"

# MAXNICS is the maximum number of interfaces that will be configured.
# You may need to increase the MAXNICS value if you have many interfaces, or
# you use multiple VLANs and/or bridges.  The default is 6.
# MAXNICS="6"
ENDFILE
#
############################################################################
#			  The networks file.
############################################################################
#
#echo "Creating /$ETCNETWORKS..."
/bin/cat <<EOF >$ETCNETWORKS
#
# networks	This file describes a number of netname-to-address
#		mappings for the TCP/IP subsystem. It is mostly
#		used at boot time, when no name servers are running.
#

loopback	127.0.0.0
localnet	$NETWORK

# End of networks.
EOF
chmod 644 $ETCNETWORKS
#
############################################################################
#			   The hosts file.
############################################################################
#
#echo "Creating /$HOSTS..."
/bin/cat << EOF > $HOSTS
#
# hosts		This file describes a number of hostname-to-address
#		mappings for the TCP/IP subsystem. It is mostly
#		used at boot time, when no name servers are running.
#		On small systems, this file can be used instead of a
#		"named" name server.  Just add the names, addresses
#		and any aliases to this file...
#
# By the way, Arnt Gulbrandsen <agulbra@nvg.unit.no> says that 127.0.0.1
# should NEVER be named with the name of the machine. It causes problems
# for some (stupid) programs, irc and reputedly talk. :^)
#

# For loopbacking.
127.0.0.1		localhost
::1			localhost
EOF
[ -n "$IPADDR" ] && echo -e "$IPADDR\t\t$HOSTNM.$DOMAIN $HOSTNM" >>$HOSTS
[ -n "$IPADDR6" ] && echo -e "$IPADDR6\t\t$HOSTNM.$DOMAIN $HOSTNM" >>$HOSTS
chmod 644 $HOSTS
#
############################################################################
#			The resolv.conf file.
############################################################################
#
if [ ! "$NAMESERVER" = "" ]; then
  echo "search $DOMAIN" >$RESOLV
  echo "nameserver $NAMESERVER" >>$RESOLV
else
  echo "search $DOMAIN" >$RESOLV
fi
if [ -f $RESOLV ]; then
  chmod 644 $RESOLV
fi
#
############################################################################
#			The rc.netdevice file.
############################################################################
#
if [ -r /cardfound ]; then
  if [ ! "`cat /cardfound`" = "" ]; then
    cat << EOF > etc/rc.d/rc.netdevice
# Load module for network device.
# This script is automatically generated during the installation.

/sbin/modprobe `cat /cardfound`

EOF
    chmod 755 etc/rc.d/rc.netdevice
  fi
fi
rm -f $TMP/tempmsg /cardfound
} # end write_config_files

TMP=/var/log/setup/tmp
if [ ! -d $TMP ]; then
 mkdir -p $TMP
 chmod 700 $TMP
fi

# This checks IP address syntax.
# usage: syntax_check ADDRESS #-OF-EXPECTED-SEGMENTS (up to 4)
# example: syntax_check 123.22.43.1 4
# returns: 0=found correct  1=too many fields  2=non numeric field found
syntax_check_v4() {
  RET_CODE=0
  SCRATCH=$1
  SCRATCH=`echo $SCRATCH | tr "." "/"`
  INDEX=$2
  while [ ! "$INDEX" = "0" ]; do
    # OK, so I'm a LISP-head :^)
    FIELD=`basename $SCRATCH`
    SCRATCH=`dirname $SCRATCH`
    if expr $FIELD + 1 1> /dev/null 2> /dev/null; then
      true
    else
      RET_CODE=2; # non-numeric field
    fi
    INDEX=`expr $INDEX - 1`
  done
  if [ ! "$SCRATCH" = "." ]; then
    RET_CODE=1; # too many arguments
  fi
  if [ "$3" = "WARN" -a ! "$RET_CODE" = "0" ]; then
    cat << EOF > $TMP/tempmsg
The IP address you entered, $1, is not valid.
There should be $2 groups of numbers seperated by dots, for example:
  192.168.1.1

Please correct any mistakes in the IP.
EOF
    dialog --title "INVALID VALUE" --defaultno --msgbox "`cat $TMP/tempmsg`" 9 72
    rm -r $TMP/tempmsg
  else
    if [ "$3" = "ECHO" ]; then
      echo $RET_CODE;
    fi
  fi
  return $RET_CODE;
}

# Figure out where we are...  cheap hack.
if [ ! -e etc/slackware-version -a ! -e /etc/installer -a ! -e bin/bash ]; then
  cd /
fi;

# IMPORTANT!!! NO LEADING '/' in the paths below, or this script will not
# function from the bootdisk.
RC=etc/rc.d/rc.inet1.conf		# Where rc.inet1.conf file is.
RESOLV=etc/resolv.conf			# Where resolv.conf file is.
HOSTS=etc/hosts			 	# Where hosts file is.
ETCNETWORKS=etc/networks		# Where networks file is.
#
# defaults:
USE_DHCP=""                             # Use DHCP?  "" == no.
USE_DHCP6=""
DHCP_HOSTNAME=""                        # This is our DHCP hostname.
NETWORK=127.0.0.0
IPADDRS=()
IP6ADDRS=()
# FIXME: Now deprecated:
IPADDR=127.0.0.1
NETMASK=24	# Use CIDR now.
IPADDR6=::1
PREFIX6=64

while [ 0 ]; do
  cat << EOF > $TMP/tempmsg
First, we'll need the name you'd like to give your host.
Only the base hostname is needed right now - not the domain.
For example:  darkstar

Enter hostname:
EOF
  dialog --title "ENTER HOSTNAME" --inputbox "`cat $TMP/tempmsg`" 12 64 \
      "$HOSTNM" 2> $TMP/SeThost
  if [ $? = 1 -o $? = 255 ]; then
    rm -f $TMP/SeThost $TMP/tempmsg
    exit
  fi
  HOSTNM="`cat $TMP/SeThost`"
  rm -f $TMP/SeThost $TMP/tempmsg
  if [ "$HOSTNM" = "" ] || [[ ! "$HOSTNM" =~ ^[[:alnum:]-]+$ ]] || \
      [ "${HOSTNM:0:1}" == "-" ] || [ "${HOSTNM: -1:1}" == "-" ]; then
    dialog --title "HOSTNAME" --ok-button "Back" --msgbox \
        "That doesn't appear to be a valid hostname.\n
Hostnames can only contain letters, numbers and hyphens,
and may not begin or end with a hyphen." 7 60
    if [ $? = 1 -o $? = 255 ]; then
      exit
    fi
  else
    break
  fi
done

while [ 0 ]; do
  cat << EOF > $TMP/tempmsg
Now, we need the domain name for this machine, such as:
  example.org
Do not supply a leading '.'

Enter domain name for $HOSTNM:
EOF
  dialog --title "ENTER DOMAINNAME FOR '$HOSTNM'" --inputbox \
      "`cat $TMP/tempmsg`" 12 59 "$DOMAIN" 2> $TMP/SeTdom
  if [ $? = 1 -o $? = 255 ]; then
    rm -f $TMP/SeTdom $TMP/tempmsg
    exit
  fi
  DOMAIN="`cat $TMP/SeTdom`"
  rm -f $TMP/SeTdom $TMP/tempmsg
  # These regexes doon't catch everything, just basic syntax mistakes.
  if [ "$DOMAIN" = "" ] || [[ ! "$DOMAIN" =~ ^([[:alnum:]]+[-.]*[[:alnum:]]+)+$ ]] || \
      [[ "${DOMAIN:0:1}" =~ ^[.-]$ ]] || [[ "${DOMAIN: -1:1}" == ^[.-]$ ]]; then
    dialog --title "DOMAINNAME" --ok-button "Back" --msgbox \
      "That doesn't appear to be a valid domain name.\n
Domain names can only contain letters and numbers, hyphens
and dots, and may not begin or end with a hyphen or dot." 7 68
    if [ $? = 1 -o $? = 255 ]; then
      exit
    fi
  else
    break
  fi
done

# Write the hostname with domain to /etc/HOSTNAME:
echo $HOSTNM.$DOMAIN > etc/HOSTNAME
## OBSOLETE with recent NetworkManager:
## Also make sure the hostname is written to /etc/NetworkManager/NetworkManager.conf:
#if [ -w etc/NetworkManager/NetworkManager.conf ]; then
#  sed -i "s/^hostname=.*$/hostname=$HOSTNM/g" etc/NetworkManager/NetworkManager.conf
#fi

dialog --title "CONNECT VIA VLAN" --defaultno --yesno \
"Some advanced networking set ups require a VLAN ID in order to \
connect to the network.  Do you wish to configure a VLAN ID now?\n\n\
Unless you are sure you require a VLAN ID, select 'No'." 8 68
ERRNO="$?"
if [ "$ERRNO" = "255" ]; then
  exit
elif [ "$ERRNO" = "1" ]; then
  true
else
  while true; do
    dialog --title "VLAN ID" --cancel-label "Skip" --inputbox \
        "Enter the VLAN ID used on this network:" 8 45 2>$TMP/reply
    ERRNO="$?"
    if [ "$ERRNO" = "255" ]; then
      exit
    elif [ "$ERRNO" = "1" ]; then
      break
    else
      if [[ ! "$(cat $TMP/reply)" =~ ^[0-9]+$ ]]; then
        dialog --title "VLAN ID" --ok-button "Back" --msgbox \
            "That doesn't appear to be a valid VLAN ID." 5 46
        if [ "$?" = "255" ]; then
          exit
        fi
        continue
      else
        VLAN=".$(( 10#$(cat $TMP/reply) ))"
        break
      fi
    fi
  done
fi

dialog --title "CONFIGURATION TYPE FOR '$HOSTNM.$DOMAIN'" \
--default-item NetworkManager \
--menu \
"Now we need to know how your machine connects to the network.\n\
If you have an internal network card and an assigned IP address, gateway, \
and DNS, use the 'static IP' choice to enter these values. If your IP \
address is assigned by a DHCP server (commonly used by cable modem and DSL \
services), select 'DHCP'. If you do not have a network card, select \
the 'loopback' choice. You may also select 'NetworkManager' if you would \
like to have the NetworkManager daemon automatically handle your wired and \
wireless network interfaces (this is simple and usually works). \
Which type of network setup would you like?"  21 77 5 \
"SLAAC" "Use only IPv6 SLAAC to configure ethernet" \
"static IP" "Use a static IPv4 or IPv6 address to configure ethernet" \
"DHCP" "Use a DHCP (IPv4 or IPv6) server to configure ethernet" \
"loopback" "Set up a loopback connection (modem or no net)" \
"NetworkManager" "Autoconfigure network using NetworkManager" 2> $TMP/reply
if [ $? = 1 -o $? = 255 ]; then
  rm -f $TMP/reply
  exit
fi
REPLY=`cat $TMP/reply`
rm -f $TMP/reply

if [ "$REPLY" = "DHCP" ]; then
  dialog --title "SELECT DHCP TYPE" --default-item "DHCPv4" --menu \
"Please select the type of DHCP to use to configure your networking.
Select 'DHCPv4' to configure for an IPv4 network (this is the most
common type of network, and the safe choice).  Select 'DHCPv6' for a
pure IPv6 network, or 'Both' to try and set up both types of network." 13 73 3 \
"DHCPv4" "An IPv4 based network, with no IPv6 configuration" \
"DHCPv6" "An IPv6 based network, with no IPv4 configuration" \
"Both"   "A combination of IPv4 and IPv6 networks" 2>$TMP/reply
  if [ $? = 1 -o $? = 255 ]; then
    rm -f $TMP/reply
    exit
  fi
  TYPE=`cat $TMP/reply`
  if [ "$TYPE" = "DHCPv4" ]; then
    USE_DHCP="yes"
  elif [ "$TYPE" = "DHCPv6" ]; then
    USE_DHCP6="yes"
  else
    USE_DHCP="yes"
    USE_DHCP6="yes"
  fi
  dialog --title "SET DHCP HOSTNAME"  --cancel-label "Skip" \
      --inputbox "Some network providers require \
that the DHCP hostname be set in order to connect. If so, they'll have assigned \
a hostname to your machine, which may look something like CC-NUMBER-A (this \
depends on your ISP). If you were assigned a DHCP hostname, please enter it \
below. If you do not have a DHCP hostname, just hit ENTER or select 'Skip'." 13 62 \
      2> $TMP/SeTDHCPHOST
  if [ "$?" = "255" ]; then
    exit
  fi
  NEW_DHCPHOST="`cat $TMP/SeTDHCPHOST`"
  rm -f $TMP/SeTDHCPHOST
  # OK, if we actually got something, use it.
  DHCP_HOSTNAME="$NEW_DHCPHOST"
elif [ "$REPLY" = "loopback" ]; then
  LOOPBACK="yes"
elif [ "$REPLY" = "NetworkManager" ]; then
  LOOPBACK="yes"
  NETWORKMANAGER="yes"
elif [ "$REPLY" = "SLAAC" ]; then
  LOOPBACK="no"
  USE_SLAAC="yes"
else
  LOOPBACK="no"
fi

if [ "$LOOPBACK" = "no" -a ! "$USE_DHCP" = "yes" -a ! "$USE_SLAAC" = "yes" ]; then
  while [ 0 ]; do
    while [ 0 ]; do
      if [ -r $TMP/SeTIPSv4 ]; then
        IPADDRS=($(cat $TMP/SeTIPSv4))
      fi
      dialog --title "ENTER IPv4 ADDRESSES" --cancel-label "Skip" --inputbox \
"Enter the IPv4 addresses for this host.  You may list one or more,
space delimited, IPv4 addresses with net masks in the format:
  <IP address>/<CIDR net mask>
For example:
  111.112.113.114/24
If a net mask is not specified a default of 24 will be used.

The first address entered will become the primary IPv4 address
of this host.  If you do not want to configure a static IPv4
address, just hit ENTER or select 'Skip' " \
          17 69 "${IPADDRS[*]}" 2> $TMP/SeTlip
      ERRNO="$?"
      if [ "$ERRNO" = "1" ]; then
        break
      elif [ "$ERRNO" = "255" ]; then
        rm -f $TMP/SeTlip
        exit
      fi
      IPADDRS=($(cat $TMP/SeTlip))
      rm -f $TMP/SeTlip
      if [ "${IPADDRS[*]}" = "" ]; then
        break
      fi
      for ((I=0; I < ${#IPADDRS[@]}; I++)); do
        IP="${IPADDRS[$I]%%/*}"
        MASK="${IPADDRS[$I]#*/}"
        if [ "$IP" = "" ]; then
          dialog --title "NO IPv4 ADDRESSES" --ok-button "Back" --msgbox \
              "No IP specified in entry: ${IPADDRS[$I]}." 5 46
          continue
        fi
        syntax_check_v4 "$IP" 4 WARN || continue 2
        if [ "$MASK" = "" ]; then
          IPADDRS[$I]="$IP/24"
          MASK="24"
        fi
        if [[ ! "$MASK" =~ ^[0-9]+$ ]] || (($MASK <= 0)) || (($MASK > 32)); then
          dialog --title "INVALID NET MASK" --msgbox \
"Invalid net mask specified for entry: ${IPADDRS[$I]}.
Valid net masks will be in the range 1-32." 6 70
          echo "${IPADDRS[@]}" >$TMP/SeTIPSv4
          continue 2
        fi
      done
      # echo "${IPADDRS[0]%%/*}" >$TMP/SeTIP
      # echo "${IPADDRS[0]#*/}" >$TMP/SeTnetmask
      echo "${IPADDRS[@]}" >$TMP/SeTIPSv4
      break
    done

    if [ ! "${IPADDRS[*]}" = "" ]; then
      while [ 0 ]; do
        if [ -r $TMP/SeTgateway4 ]; then
          GATEWAY="`cat $TMP/SeTgateway4`"
        fi
        dialog --title "ENTER IPv4 GATEWAY ADDRESS" --cancel-label "Skip" --inputbox \
"Enter the address for the IPv4 gateway on your network, such as:
  `echo ${IPADDRS[0]} | cut -f 1-3 -d .`.1

If you don't have an IPv4 gateway on your network just hit ENTER
without entering a gateway IP address, or select 'Skip'.

Enter IPv4 gateway address:" 14 68 "$GATEWAY" 2> $TMP/SeTgate4
        if [ $? = 1 -o $? = 255 ]; then
          rm -f $TMP/SeTgate4
          exit
        fi
        GATEWAY="`cat $TMP/SeTgate4`"
        rm -f $TMP/SeTgate4
        if [ "$GATEWAY" = "" ]; then
          echo > $TMP/SeTgateway4
          break
        else
          echo "$GATEWAY" >$TMP/SeTgateway4
        fi
        syntax_check_v4 "$GATEWAY" 4 WARN
        if [ $? = 0 ]; then
          echo $GATEWAY > $TMP/SeTgateway4
          break
        fi
      done
    fi

exit

    while [ 0 ]; do
      if [ -r $TMP/SeTIP6 ]; then
        IPADDR6=`cat $TMP/SeTIP6`
      fi
      dialog --title "ENTER IPv6 ADDRESS FOR '$HOSTNM.$DOMAIN'" --inputbox \
"Enter the IPv6 address for the local machine.
Example: fe80:426c:ffff::365a
If you do not want to configure a static IPv6 address, just hit ENTER." \
          10 74 $IPADDR6 2> $TMP/SeTlip6
      if [ $? = 1 -o $? = 255 ]; then
        rm -f $TMP/SeTlip6
        exit
      fi
      IPADDR6="`cat $TMP/SeTlip6`"
      rm -f $TMP/SeTlip6
      if [ "$IPADDR6" = "" ]; then
        if [ "$IPADDR" = "" ]; then
          dialog --title "NO IP ADDRESSES" --yesno \
"You have not configured any IP addresses for your system.
Are you sure you want to proceed with no IPs?" 6 61
          if [ $? = 0 ]; then
            break 2
          else
            continue 2
          fi
        fi
      else
        # We can only do a basic validation of the entered address
        # as regexes for IPv6 addresses are very complex.
        if echo "$IPADDR6" | grep -E "^[0-9a-fA-F:]+$" >/dev/null; then
          echo $IPADDR6 > $TMP/SeTIP6
          break
        else
          dialog --title "INVALID IP ADDRESS" --msgbox \
"The IP address you entered is not valid.
Please enter a valid IPv6 address." 6 44
          continue
        fi
      fi
    done

    if [ ! "$IPADDR6" = "" ]; then
      while [ 0 ]; do
        if [ -r $TMP/SeTprefix6 ]; then
          PREFIX6=`cat $TMP/SeTprefix6`
        fi
        dialog --title "ENTER IPv6 PREFIX FOR LOCAL NETWORK" --inputbox \
"Enter your IPv6 prefix length.
This will be a single number (eg, 64)" 9 55 $PREFIX6 2> $TMP/SeTprefix6
        if [ $? = 1 -o $? = 255 ]; then
          rm -f $TMP/SeTprefix6
          exit
        fi
        PREFIX6="`cat $TMP/SeTprefix6`"
        if [ "$PREFIX6" = "" ]; then
          dialog --title "PREFIX REQUIRED" --msgbox \
"You have configured this host with a v6
IP address - a prefix is required." 6 43
          continue
        elif (($PREFIX6 == 0)) 2>/dev/null || (($PREFIX6 > 128)) 2>/dev/null || \
            ! (($PREFIX6)) 2>/dev/null; then
          dialog --title "PREFIX INVALID" --msgbox \
"The prefix you entered is not valid.
Valid prefixes will be in the range 1-128." \
6 46
          continue
        else
          echo $PREFIX6 >$TMP/SeTprefix6
          break
        fi
      done

      while [ 0 ]; do
        if [ -r $TMP/SeTgateway6 ]; then
          GATEWAY6=`cat $TMP/SeTgateway6`
        fi
        dialog --title "ENTER IPv6 GATEWAY ADDRESS" --inputbox \
"Enter the address for the IPv6 gateway on your network, such as:
  fe80:426c:ffff::1

If you don't have an IPv6 gateway on your network just hit ENTER
without entering a gateway IP address.

Enter IPv6 gateway address:" 14 68 $GATEWAY6 2> $TMP/SeTgate6
        if [ $? = 1 -o $? = 255 ]; then
          rm -f $TMP/SeTgate6
          exit
        fi
        GATEWAY6="`cat $TMP/SeTgate6`"
        rm -f $TMP/6SeTgate6
        if [ "$GATEWAY6" = "" ]; then
          echo > $TMP/SeTgateway6
          break 2
        fi
        # We can only do a basic validation of the entered address
        # as regexes for IPv6 addresses are very complex.
        if echo "$GATEWAY6" | grep -E "^[0-9a-fA-F:]+$" >/dev/null; then
          echo $GATEWAY6 > $TMP/SeTgateway6
          break 2
        else
          dialog --title "INVALID IP ADDRESS" --msgbox \
"The IP address you entered is not valid.
Please enter a valid IPv6 address." 6 44
          continue
        fi
        echo $GATEWAY6 > $TMP/SeTgateway6
      done
    fi
  done
fi

if [ "$LOOPBACK" = "no" ]; then
 dialog --title "USE A NAMESERVER?" --yesno "Do you wish to configure \
a nameserver?" 5 42
 if [ $? = 0 ]; then
  if [ ! "$IPADDR" = "" ]; then
    if [ ! "$GATEWAY" = "" ]; then
      DNSSAMPLE="$GATEWAY"
      DNSDEFAULT="$GATEWAY"
    else
      DNSSAMPLE="`echo $IPADDR | cut -f 1-3 -d .`.1"
    fi
  fi
  if [ ! "$IPADDR6" = "" ]; then
    if [ ! "$GATEWAY6" = "" ]; then
      DNSSAMPLE="$DNSSAMPLE or $GATEWAY6"
      # Keep the v4 nameserver the default, for now.
      # DNSDEFAULT="$GATEWAY6"
    else
      DNSSAMPLE="or fe80:426c:ffff::1"
    fi
  fi
  while [ "$NAMESERVER" = "" ]; do
   dialog --title "ENTER NAMESERVER IP ADDRESS" --inputbox \
"Please give the IP address of the name server to use, such as
  $DNSSAMPLE
You can add more Domain Name Servers later by editing
  /$RESOLV.

Primary name server to use:"  13 65 $DNSDEFAULT 2> $TMP/SeTns
   if [ $? = 1 -o $? = 255 ]; then
    rm -f $TMP/SeTns
    break
   fi
   NAMESERVER="`cat $TMP/SeTns`"
   rm -f $TMP/SeTns
  done
 fi
fi

# Check for existing network driver:
unset DONOTPROBE
if cat /proc/net/dev | grep eth0 1> /dev/null 2> /dev/null ; then
  DONOTPROBE=true 
fi

# Really, this rc.netdevice thing is mostly obsolete except for
# handmade local scripts anyway, these days with udev...
# So, we'll skip it:
DONOTPROBE=true

if [ -d lib/modules/`uname -r` \
     -a ! "$LOOPBACK" = "yes" \
     -a ! -x etc/rc.d/rc.hotplug \
     -a ! "$DONOTPROBE" = "true" \
     -a ! -r /cardfound ]; then
  dialog --title "PROBE FOR NETWORK CARD?" --menu "If you like, we \
can look to see what kind of network card you have in your machine, and \
if we find one create an /etc/rc.d/rc.netdevice script to load the module \
for it at boot time. There's a slight bit of danger that the probing \
can cause problems, but it almost always works. If you'd rather configure \
your system manually, you can skip the probing process and edit \
/etc/rc.d/rc.modules or /etc/modules.conf later to have it load the right module." \
16 68 2 \
"probe" "look for network cards to set up" \
"skip" "skip probe;  edit /etc/rc.d/rc.modules later" 2> $TMP/reply
  if [ $? = 1 -o $? = 255 ]; then
    rm -f $TMP/reply
    exit
  fi
  REPLY=`cat $TMP/reply`
  rm -f $TMP/reply
  if [ ! "$REPLY" = "skip" ]; then
    for card in 3c59x 82596 dgrs eepro100 e1000 epic100 hp100 lance \
    ne2k-pci olympic pcnet32 rcpci 8139too 8139cp tlan tulip via-rhine \
    yellowfin natsemi ; do
      chroot . /sbin/modprobe $card 2> /dev/null
      if [ $? = 0 ]; then
        dialog --title "CARD DETECTED" --msgbox "A networking card using \
the $card.o module has been detected." 5 72
        echo "$card" > /cardfound
        break;
      fi
     done
     if [ ! -r /cardfound ]; then
       # Don't probe for com20020, because it doesn't check and will always load.
       # Don't probe for arlan, because it needs irq= to work.
       # Don't probe for com90io or com90xx because they taint the kernel.
       for card in depca ibmtr 3c359 3c501 3c503 3c505 3c507 3c509 3c515 ac3200 \
         abyss acenic at1700 cosa cs89x0 de4x5 de600 \
         de620 dmfe dl2k e2100 eepro eexpress eth16i ewrk3 fealnx hamachi hostess_sv11 \
         hp-plus hp lanstreamer ni5010 ni52 ni65 ns83820 sb1000 sealevel sis900 sk98lin skfp smc-ultra \
         smc9194 smctr starfire sungem sunhme tg3 wd e100 iph5526 lp486e tmspci winbond-840 ; do
         chroot . /sbin/modprobe $card 2> /dev/null
         if [ $? = 0 ]; then
           dialog --title "CARD DETECTED" --msgbox "A networking card using \
the $card.o module has been detected." 5 72
           echo "$card" > /cardfound
           break
         fi
       done
     fi
     if [ ! -r /cardfound ]; then
       dialog --title "NO CARD DETECTED" --msgbox "Sorry, but no network \
card could be probed for on your system. Some cards (like non-PCI NE2000s) \
must be supplied with the I/O address to use and can't be probed for safely. \
You'll have to try to configure the card later by editing \
/etc/rc.d/rc.modules or recompiling your kernel." 9 70
     fi
  fi
fi

if [ "$LOOPBACK" = "yes" -a ! "$NETWORKMANAGER" = "yes" ]; then
  dialog --title "NETWORK SETUP COMPLETE" --yesno "Your networking \
system is now configured to use loopback:

IP address: 127.0.0.1
Netmask: 255.255.255.0

Is this correct?  Press 'Yes' to continue, or 'No' to reconfigure." 10 70
  RETVAL=$?
elif [ "$LOOPBACK" = "yes" -a "$NETWORKMANAGER" = "yes" ]; then
  dialog --title "NETWORK SETUP COMPLETE" --yesno "Your networking \
system is now configured to use NetworkManager for
wired and wireless network management. To set up wireless networks
and view status, add the Network Management control panel widget to
your KDE desktop.

Is this correct? Press 'Yes' to confirm, or 'No' to reconfigure." 10 71
  RETVAL=$?
elif [ "$USE_SLAAC" = "yes" ]; then
  dialog --title "NETWORK SETUP COMPLETE" --yesno \
"Your system is now set up to autoconfigure an IPv6 IP address.
If this is correct, hit 'Yes' to confirm, or 'No' to cancel." 6 66
RETVAL=$?
elif [ "$USE_DHCP" = "" -a "$USE_DHCP6" = "" ]; then
  while [ 0 ]; do
    dialog --title "CONFIRM NETWORK SETUP" \
--ok-label Accept --extra-label Edit --cancel-label Restart --inputmenu \
"These are the settings you have entered. To accept them and complete \
the networking setup, press ENTER. If you need to make any changes, you \
can do that now using 'Edit' (or reconfigure later using 'netconfig')." \
24 75 15 \
"Hostname:" "$HOSTNM" \
"Domain Name:" "$DOMAIN" \
"IPv4 Address:" "$IPADDR" \
"IPv4 Netmask:" "$NETMASK" \
"IPv4 Gateway:" "$GATEWAY" \
"IPv6 Address:" "$IPADDR6" \
"IPv6 Prefix:" "$PREFIX6" \
"IPv6 Gateway:" "$GATEWAY6" \
"Nameserver:" "$NAMESERVER" 2> $TMP/tempmsg
    RETVAL=$?
    if [ "$RETVAL" = "3" ]; then
      FIELD=`cat $TMP/tempmsg | cut -f 1 -d : | cut -f 2- -d ' '`
      NEWVAL=`cat $TMP/tempmsg | cut -f 2 -d : | cut -f 2- -d ' '`
      if [ "$FIELD" = "Hostname" ]; then
        HOSTNM=$NEWVAL
      elif [ "$FIELD" = "Domain Name" ]; then
        DOMAIN=$NEWVAL
      elif [ "$FIELD" = "IPv4 Address" ]; then
        IPADDR=$NEWVAL
      elif [ "$FIELD" = "IPv4 Netmask" ]; then
        NETMASK=$NEWVAL
      elif [ "$FIELD" = "IPv4 Gateway" ]; then
        GATEWAY=$NEWVAL
      elif [ "$FIELD" = "IPv6 Address" ]; then
        IPADDR6=$NEWVAL
      elif [ "$FIELD" = "IPv6 Prefix" ]; then
        PREFIX6=$NEWVAL
      elif [ "$FIELD" = "IPv6 Gateway" ]; then
        GATEWAY6=$NEWVAL
      elif [ "$FIELD" = "Nameserver" ]; then
        NAMESERVER=$NEWVAL
      fi
    else
      break
    fi
  done
else # DHCP was used
  dialog --title "CONFIRM NETWORK SETUP" \
--yesno "Your networking system is now configured to use DHCP:

  Hostname:  $HOSTNM
  Domain name:  $DOMAIN
  DHCP hostname:  $DHCP_HOSTNAME
  IP addresses:  (use DHCP server)
  Netmask & Prefix:  (use DHCP server)
  Gateways:  (use DHCP server)
  Nameserver:  (use DHCP server)

Is this correct?  Press 'Yes' to continue, or 'No' to reconfigure." 15 76
  RETVAL=$?
fi

if [ "$RETVAL" = "0" ]; then
  # Write the hostname with domain to /etc/HOSTNAME:
  echo $HOSTNM.$DOMAIN > etc/HOSTNAME
  # Also make sure the hostname is written to /etc/NetworkManager/NetworkManager.conf:
  if [ -w etc/NetworkManager/NetworkManager.conf ]; then
    sed -i "s/^hostname=.*$/hostname=$HOSTNM/g" etc/NetworkManager/NetworkManager.conf
  fi
  write_config_files
  if [ "$NETWORKMANAGER" = "yes" -a -r etc/rc.d/rc.networkmanager ]; then
    chmod 755 etc/rc.d/rc.networkmanager
  fi
  if [ "$1" = "" ]; then
    dialog --msgbox "Settings accepted. Basic network configuration is complete." 6 40
  fi
else
  if [ "$1" = "" ]; then
    dialog --msgbox "Settings discarded. Run the 'netconfig' command again if you need to reconfigure your network settings." 6 60
  fi
fi

exit $RETVAL