This file is indexed.

/usr/share/debian-lan-config/fai/config/class/SERVER_A.var is in debian-lan-config 0.19+deb8u1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# Default values for installation SERVER_A.

# allow installation of packages from unsigned repositories
FAI_ALLOW_UNSIGNED=0

CONSOLEFONT=
KEYMAP=us-latin1

# Set UTC=yes if your system clock is set to UTC (GMT), and UTC=no if not.
UTC=yes
TIMEZONE=Europe/Berlin

# Local user and root password for the new installed linux system
# Leave empty if no local user apart from root is needed.
USERNAME=""

# Use: 'mkpasswd -Hsha-256 <PASSWORD>' to create the password hash
# pw is "fai":
#ROOTPW='$1$kBnWcO.E$djxB128U7dMkrltJHPf6d1'
# If $ROOTPW is empty, you will be prompted during installation:
ROOTPW=${ROOTPW:-''}
# If $ADMINPW is empty, you will be prompted during installation:
ADMINPW=${ADMINPW:-''}

## All sensible data will end up here (see below):
DATADIR=/root/installation/

## The Kerberos KDC master password in clear text (!).  If undefined
## or empty, a random password will be created and saved in $DATADIR.
KDC_MASTER_PW=

## The password for the LDAP admin and root's principals in clear
## text (!!!).  If undefined or empty, a random password will be
## created and saved in $DATADIR.
LDAP_ADMIN_PW=

## Variables that define the network.  You can choose the same IP
## address for mainserver ($MAINSERVER_IPADDR) and gateway ($GATEWAY)
## interactively during installation, see below.
MAINSERVER_IPADDR=${MAINSERVER_IPADDR:-''}
GATEWAY=${GATEWAY:-''}
BROADCAST_LAN=${BROADCAST_LAN:-'10.0.255.255'}
NAMESERVER_IPADDR=""  # leave empty to use mainserver's IP address

if [ -z "$GATEWAY" ] || [ -z "$MAINSERVER_IPADDR" ] ; then
    ## Dialog to choose setup:
    inp=$(dialog --insecure --stdout --backtitle " Network Setup " --radiolist \
        "There are two variants available:\n\n\
   SEPARATE: The mainserver and the network's gateway\n\
             are separate machines.\n\n\
   COMBINED: The mainserver is configured as gateway\n\
             to the external network (2 NICs needed)." 15 63 2 \
        SEPARATE " mainserver: 10.0.0.10, gateway: 10.0.0.1 " on \
        COMBINED " mainserver == gateway: 10.0.0.1, 2 NICs " off )
    if [ "$inp" = "COMBINED" ] ; then
        MAINSERVER_IPADDR='10.0.0.1'
        GATEWAY='10.0.0.1'
    else
        MAINSERVER_IPADDR='10.0.0.10'
        GATEWAY='10.0.0.1'
    fi
    unset inp
fi

SUBNET="10.0.0.0"
NETMASK="255.255.0.0"
SUBNETMASK="10.0.0.0/16"

## NETMASK for FAI config space access:
FAINETMASK=${FAINETMASK:-'10.0.0.0/16'}

## DHCP range for unknown clients (cf. dhcpd.conf):
RANGE="10.0.1.100 10.0.1.199"

## IP address-endings for workstations and diskless machines (the list
## is generated using 'seq $WS_RANGE' respectively 'seq $DL_RANGE'):
WS_RANGE="50 149"
DL_RANGE="150 249"

## Local APT repository for the site (accessible via http).
## Set empty to skip this feature.
APT_REPO_DIR="/var/www/debian/"
## URL of the local site's APT repository.
## Set empty to skip this feature.
APT_URL="http://www.intern/debian/"

# erros in tasks greater than this value will cause the installation to stop
STOP_ON_ERROR=700