dotfiles/root/etc/NetworkManager/conf.d/dhcp-hostname.conf
2026-03-11 14:10:12 +01:00

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# Do not send the system hostname to DHCP servers.
#
# By default NetworkManager includes the system hostname in DHCP
# requests so the DHCP server can label leases or register dynamic DNS
# records. Many networks do not use this information, and sending it
# unnecessarily exposes device identity.
#
# Disabling this slightly improves privacy when joining unknown
# networks, especially when MAC randomization is enabled.
#
# Individual connections can override this if needed:
# nmcli connection modify <connection> ipv4.dhcp-send-hostname yes
# nmcli connection modify <connection> ipv6.dhcp-send-hostname yes
[ipv4]
dhcp-send-hostname=false
[ipv6]
# Only applies on networks using DHCPv6. Most IPv6 networks use SLAAC
# instead, in which case this setting has no effect.
dhcp-send-hostname=false