Add increment IPv6
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#!/bin/bash
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## author : Dryusdan
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## date : 30/09/2019
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## description : An incremental IP
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## usage : ./increment_ip.sh
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## Bash strict mode ####################################
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set -o errexit # abort on nonzero exitstatus
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set -o nounset # abort on unbound variable
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set -o pipefail # don't hide errors within pipes
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## Bash color ##########################################
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# Set colors
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RED='\033[0;31m'
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GREEN='\033[00;32m'
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YELLOW='\033[00;33m'
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BLUE='\033[00;34m'
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PURPLE='\033[00;35m'
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CYAN='\033[00;36m'
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LIGHTGRAY='\033[00;37m'
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LRED='\033[01;31m'
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LGREEN='\033[01;32m'
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LYELLOW='\033[01;33m'
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LBLUE='\033[01;34m'
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LPURPLE='\033[01;35m'
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LCYAN='\033[01;36m'
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WHITE='\033[01;37m'
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NC='\033[0m' # No Color
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## Logs ################################################
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readonly SCRIPTNAME="$(basename "$0")"
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info() { echo -e "${LBLUE}[INFO] $* ${NC}" | logger --tag "${SCRIPTNAME}" --stderr ; }
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warning() { echo -e "${YELLOW}[WARNING] $* ${NC}" | logger --tag "${SCRIPTNAME}" --stderr ; }
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error() { echo -e "${LRED}[ERROR] $* ${NC}" | logger --tag "${SCRIPTNAME}" --stderr ; }
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fatal() { echo -e "${RED}[FATAL] $* ${NC}" | logger --tag "${SCRIPTNAME}" --stderr ; exit 1 ; }
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########################################################
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info "start ${SCRIPTNAME}"
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## Define variables ####################################
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LAST_DIGIT=$(cat last_digit.txt)
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LAST_DIGIT_HEXA=$((16#${LAST_DIGIT}))
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RANGE="2a01:4f8:161:2269:8000:c01d:c01a:"
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########################################################
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## Starting script #####################################
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info "generating new IP"
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for i in $(seq ${LAST_DIGIT_HEXA} $((16#ffff)));
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do
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NEW_IP=$(printf "${RANGE}%.4x\n" $i)
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LAST_DIGIT_NEW_IP=$(printf '%x\n' $i)
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break;
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done
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info "Setting new IP"
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ip -6 addr add ${NEW_IP}/65 dev eth0
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info "Remove last IP"
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ip -6 addr del ${RANGE}:${LAST_DIGIT}/65 dev eth0
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echo ${LAST_DIGIT_NEW_IP} > last_digit.txt
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info "Ending script"
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#######################################################
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cb06
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