Add increment IPv6

increment_ip.sh

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

last_digit.txt

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+cb06