#!/bin/bash
s='#Tito
192.168.1.21
192.168.1.119
#Hiko
192.168.1.243
192.168.1.125
192.168.1.94
192.168.1.24
192.168.1.242
#Pico
192.168.1.23
192.168.1.93
192.168.1.121'
awk -v RS= '/^#Hiko$/{getline;print;exit}' <<< "$s"
IyEvYmluL2Jhc2gKcz0nI1RpdG8KCjE5Mi4xNjguMS4yMQoxOTIuMTY4LjEuMTE5CgojSGlrbwoKMTkyLjE2OC4xLjI0MwoxOTIuMTY4LjEuMTI1CjE5Mi4xNjguMS45NAoxOTIuMTY4LjEuMjQKMTkyLjE2OC4xLjI0MgoKI1BpY28KCjE5Mi4xNjguMS4yMwoxOTIuMTY4LjEuOTMKMTkyLjE2OC4xLjEyMScKYXdrIC12IFJTPSAnL14jSGlrbyQve2dldGxpbmU7cHJpbnQ7ZXhpdH0nIDw8PCAiJHMi