check-hostname

#!/bin/bash
#
# Configures NetworkManager's active connection to register the
# hostname with DHCP over IPv4.

set -e

readonly HOSTNAME=$(hostname)
readonly CONNECTION=$(nmcli -t -f NAME c show --active)

sudo nmcli con modify "${CONNECTION}" ipv4.dhcp-send-hostname yes
sudo nmcli con modify "${CONNECTION}" ipv4.dhcp-hostname "${HOSTNAME}"
sudo nmcli con modify "${CONNECTION}" ipv6.dhcp-send-hostname yes
sudo nmcli con modify "${CONNECTION}" ipv6.dhcp-hostname "${HOSTNAME}"