When using dynamic ip allocation with kvm, it's hard to find vm ips for ssh, etc. you can schedule this cron job to add dns records based on the allocated ip addresses (by dnsmasq) and their name. Then, you can access them via their names instead of ip.

virsh-auto-hosts-updater.sh

#!/usr/bin/env bash

get_etc_hosts_contents() {
    hosts_lines=$(cat /etc/hosts | wc -l)
    grep "virsh-auto-hosts-updater" /etc/hosts -B $hosts_lines
    if [[ $? -eq 1 ]]; then
        contents=$(cat /etc/hosts)
        contents="$contents\n\n\n#### virsh-auto-hosts-updater: Lines below are updated automatically. DO NOT EDIT THIS LINE\n"
        printf "$contents"
    fi
}


dhcp_leases=$(virsh net-dhcp-leases default | tail -n +3)
etc_hosts_contents=$(get_etc_hosts_contents)
mapping=""

while read -r vminfo
do
    ip=$(echo $vminfo | awk '{print $5}' | cut -d/ -f1)
    name=$(echo $vminfo | awk '{print $6}')
    mapping="$mapping$ip\t$name\n"
done <<<$dhcp_leases

printf "$etc_hosts_contents\n$mapping" | sudo tee /etc/hosts