This file is indexed.

/usr/lib/bosixnet/update_address is in bosixnet-daemon 1.9-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/bash

# Config file
CONF_FILE="/etc/bosixnet/bosixnet-daemon.conf"

# Default host name
TMP_STR="$(/*/ifconfig 2> /dev/null | grep ether | sort | sha256sum)"
HOST_NAME="$(uname -n)-${TMP_STR:3:8}"

# Default website URL
URL="http://ipv6.example.com/bosixnet"

# Read settings from config file if it exists
[ -e "${CONF_FILE}" ] && . "${CONF_FILE}"


PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

if [ ! -z "${NETWORK_DEVICE}" ]; then
    IPv6_INFO="$(ip -6 addr show "${NETWORK_DEVICE}" | grep -i global)"
else
    IPv6_INFO="$(ip -6 addr | grep -i global)"
fi

if [ ! -z "${IPv6_INFO}" ]; then
    # Get current IPv6 address using simple regexp
    IPv6_CUR=$(echo "${IPv6_INFO}" | sed -ne "s|^.*inet6\ \(.*\)/[0-9]*\ .*$|\1|p" | tail -n1)
    # Check if this IPv6 address is valid
    IPv6_CUR="$(echo "${IPv6_CUR}" | grep '^....:.*:.*:.*')"
fi

if [ ! -z "${IPv6_CUR}" ]; then
    for DEST in ${URL} ; do
        LINK="${DEST}/${HOST_NAME}"
        IPv6_OLD="$(curl -L ${LINK} 2> /dev/null)"
        if [ "${IPv6_OLD}" != "${IPv6_CUR}" ]; then
            curl -L "${LINK}?update=${IPv6_CUR}" &> /dev/null
        fi
    done
fi