#!/bin/bash
IFACE=$(ip -br l | awk '$1 !~ "lo|vir|vet" { print $1}')
echo "" | sudo tee -a /etc/issue
for i in $IFACE;
do
        #echo "$i"
        echo "$i: \4{$i}" | sudo tee -a /etc/issue
done
echo "" | sudo tee -a /etc/issue