# Control link-local name resolution protocols for connections.
#
# LLMNR (Link-Local Multicast Name Resolution) and mDNS (Multicast DNS)
# allow hosts on the same local network to resolve hostnames without
# using a traditional DNS server. They use multicast queries on the
# local link and are commonly used for ad-hoc discovery (for example
# resolving nearby machines or services).
#
# These protocols can leak hostnames to the local network and may allow
# spoofing attacks on untrusted networks. For this reason they are often
# disabled on laptops that regularly join public or unknown networks.
#
# NetworkManager can control these features per connection when the
# active DNS plugin supports them (for example: dns-systemd-resolved).
#
# Values:
#
#   0 / "no"
#       Disable the protocol entirely for the interface.
#       No hostname registration and no multicast resolution.
#
#   1 / "resolve"
#       Allow resolving hostnames via multicast queries but do not
#       announce (register) this host's hostname on the network.
#
#   2 / "yes"
#       Fully enable the protocol. The host registers its hostname and
#       also performs multicast resolution.
#
# If the DNS backend does not support these protocols the settings have
# no effect.
#
# Per-connection override examples:
#   nmcli connection modify <connection> connection.llmnr resolve
#   nmcli connection modify <connection> connection.mdns resolve

[connection]
connection.llmnr=1
connection.mdns=1