Talk is cheap. Show me the code.: 2016-09

NetworkManager: Disable Sending Hostname to DHCP Server

Edit /etc/NetworkManager/NetworkManager.conf file to contain the following default settings for new connections:

[connection]
ipv4.dhcp-send-hostname=false
ipv6.dhcp-send-hostname=false

Disable sending hostname to DHCP server for already existing connections:

nmcli -t -f uuid connection | while read uuid; do
 nmcli connection modify $uuid \
 ipv4.dhcp-send-hostname false \
 ipv6.dhcp-send-hostname false
done

Restart NetworkManager to apply the settings:

systemctl restart NetworkManager