host-name= Set the host name avahi-daemon tries
to register on the LAN. If omited defaults to the system host
name as set with the sethostname() system call.
domain-name= Set the default domain name avahi-daemon
tries to register its host name and services on the LAN in. If
omitted defaults to ".local".
browse-domains= Set a comma seperated list of
browsing domains (in addition to the default one and those
announced inside the default browsing domain). Please note
that the user may specify additional browsing domains on the
client side, either by setting $AVAHI_BROWSE_DOMAINS to a list
of colon seperated domains or by adding them to the XDG config
file ~/.config/avahi/browse-domains (seperated by
newlines).
use-ipv4= Takes a boolean value ("yes" or
"no"). If set to "no" avahi-daemon will not use IPv4
sockets. Default is "yes".
use-ipv6= Takes a boolean value ("yes" or
"no"). If set to "no" avahi-daemon will not use IPv6
sockets. Default is "yes".
check-response-ttl= Takes a boolean value ("yes"
or "no"). If set to "yes", an additional security check is
activated: incoming IP packets will be ignored unless the IP
TTL is 255. Earlier mDNS specifications required this
check. Since this feature may be incompatible with newer
implementations of mDNS it defaults to "no". On the other hand
it provides extra security.
use-iff-running= Takes a boolean value ("yes" or
"no"). If set to "yes" avahi-daemon monitors the IFF_RUNNING
flag bit which is used by some (modern) network drivers to
tell user space if a network cable is plugged in (in case of
copper ethernet), or the network card is associated with some
kind of network (in case of WLAN). If IFF_RUNNING is set
avahi-daemon will automatically announce its services on that
network. Unfortunately far too many network drivers do not
support this flag or support it in a broken way. Therefore
this option defaults to "no".
enable-dbus= Takes either "yes", "no" or
"warn". If set to "yes" avahi-daemon connects to D-BUS,
offering an object oriented client API. It is only available
if Avahi has been compiled with --enable-dbus in
which case it defaults to "yes". "warn" behaves like "yes",
but the daemon starts up even when it fails to connect to a
D-BUS daemon. In addition, if the connection to the D-BUS
daemon is terminated we try to reconnect. (Unless we are in a
chroot() environment where this definitely will fail.)
disallow-other-stacks= Takes a boolean value
("yes" or "no"). If set to "yes" no other process is allowed
to bind to UDP port 5353. This effectively impedes other mDNS
stacks from running on the host. Use this as a security
measure to make sure that only Avahi is responsible for mDNS
traffic. Please note that we do no recommend running multiple
mDNS stacks on the same host simultaneously. This hampers
reliability and is a waste of resources. However, to not annoy
people this option defaults to "no".
allow-point-to-point= Takes a boolean value
("yes" or "no"). If set to "yes" avahi-daemon will make use of
interfaces with the POINTOPOINT flag set. This option defaults
to "no" as it might make mDNS unreliable due to usually large
latencies with such links and opens a potential security hole
by allowing mDNS access from Internet connections. Use with
care and YMMV!
disable-publishing= Takes a boolean value
("yes" or "no"). If set to "yes", no record will be published by
Avahi, not even address records for the local host. Avahi will
be started in a querying-only mode. Use this is a security
measure. This option defaults to "no"
disable-user-service-publishing= Takes a boolean value
("yes" or "no"). If set to "yes", Avahi will still publish
address records and suchlike but will not allow user
applications to publish services. Use this is a security
measure. This option defaults to "no"
add-service-cookie= Takes a boolean value ("yes"
or "no"). If set to "yes" an implicit TXT entry will be added
to all locally registered services, containing a cookie value
which is chosen randomly on daemon startup. This can be used
to detect if two services on two different
interfaces/protocols are actually identical. Defaults to
"yes".
publish-addresses= Takes a boolean value ("yes"
or "no"). If set to "yes" avahi-daemon will register mDNS
address records for all local IP addresses. Unless you want to
use avahi-daemon exclusively for browsing it's recommended to
enable this. If you plan to register local services you need
to enable this option. Defaults to "yes".
publish-hinfo= Takes a boolean value ("yes" or
"no"). If set to "yes" avahi-daemon will register an mDNS
HINFO record on all interfaces which contains information
about the local operating system and CPU, which might be
useful for administrative purposes. This is recommended by the
mDNS specification but not required. For the sake of privacy
you might choose to disable this feature. Defaults to
"yes."
publish-workstation= Takes a boolean value
("yes" or "no"). If set to "yes" avahi-daemon will register a
service of type "_workstation._tcp" on the local LAN. This
might be useful for administrative purposes (i.e. browse for
all PCs on the LAN), but is not required or recommended by any
specification. Newer MacOS X releases register a service of
this type. Defaults to "yes".
publish-domain= Takes a boolean value ("yes" or
"no"). If set to "yes" avahi-daemon will announce the locally
used domain name (see above) for browsing by other
hosts. Defaults to "yes".
publish-dns-servers= Takes a comma seperated
list of IP addresses for unicast DNS servers. You can use this
to announce unicast DNS servers via mDNS. When used in
conjunction with avahi-dnsconfd on the client
side this allows DHCP-like configuration of unicast DNS
servers.
publish-resolv-conf-dns-servers= Takes a boolean
value ("yes" or "no"). If set to "yes" avahi-daemon will
publish the unicast DNS servers specified in
/etc/resolv.conf in addition to those specified
with publish-dns-servers . Send avahi-daemon a
SIGHUP to have it reload this file. Defaults to "no".
This section is used to define system resource limits for the
daemon. See
rlimit-as= Value in bytes for RLIMIT_AS (maximum size of the process's virtual memory). Sensible values are heavily system dependent.
rlimit-core= Value in bytes for RLIMIT_CORE (maximum core file size). Unless you want to debug avahi-daemon, it is safe to set this to 0.
rlimit-data= Value in bytes for RLIMIT_DATA (maximum size of the process's data segment). Sensible values are heavily system dependent.
rlimit-fsize= Value for RLIMIT_FSIZE (maximum size of files the process may create). Since avahi-daemon shouldn't write any files to disk, it is safe to set this to 0.
rlimit-nofile= Value for RLIMIT_NOFILE (open file descriptors). avahi-daemon shouldn't need more than 15 to 20 open file descriptors concurrently.
rlimit-stack= Value in bytes for RLIMIT_STACK (maximum size of the process stack). Sensible values are heavily system dependent.
rlimit-nproc= Value for RLIMIT_NPROC (number of process of user). Since only a single avahi-daemon process is usually running you can set this safely to 1.