MDNSD(8) Maintenance Commands and Procedures MDNSD(8)
mdnsd - Multicast and Unicast DNS daemon
mdnsd
mdnsd (also known as mDNSResponder on some systems) is a daemon invoked
at boot time to implement Multicast DNS and DNS Service Discovery.
mdnsd listens on UDP port 5353 for Multicast DNS Query packets. When
it receives a query for which it knows an answer, mdnsd issues the
appropriate Multicast DNS Reply packet.
mdnsd also performs Unicast and Multicast DNS Queries on behalf of
client processes, and maintains a cache of the replies.
mdnsd has no user-specifiable command-line argument, and users should
not run mdnsd manually.
There are several methods with which to examine mdnsd's internal state
for debugging and diagnostic purposes. The syslog(3C) logging levels
map as follows:
Error - Error messages
Warning - Client-initiated operations
Notice - Sleep proxy operations
Info - Informational messages
By default, only log level Error is logged.
A SIGUSR1 signal toggles additional logging, with Warning and Notice
enabled by default:
% sudo pkill -USR1 mdnsd
A SIGUSR2 signal toggles packet logging:
% sudo pkill -USR2 mdnsd
A SIGINFO signal will dump a snapshot summary of the internal state:
% sudo pkill -INFO mdnsd
/usr/lib/inet/mdnsd
For information on Multicast DNS, see http://www.multicastdns.org/
For information on DNS Service Discovery, see http://www.dns-sd.org/
For information on how to use the Multicast DNS and the DNS Service
Discovery APIs on Mac OS X and other platforms, see
http://developer.apple.com/bonjour/
For the source code to mdnsd, see
http://developer.apple.com/darwin/projects/bonjour/
Volatile.
dns-sd(8)
The mdnsd service is managed by the service management facility,
smf(7), under the service identifier:
svc:/network/dns/multicast:default
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using svcadm(8). The service's
status can be queried using the svcs(1) command.
illumos January 28, 2016 illumos
NAME
mdnsd - Multicast and Unicast DNS daemon
SYNOPSIS
mdnsd
DESCRIPTION
mdnsd (also known as mDNSResponder on some systems) is a daemon invoked
at boot time to implement Multicast DNS and DNS Service Discovery.
mdnsd listens on UDP port 5353 for Multicast DNS Query packets. When
it receives a query for which it knows an answer, mdnsd issues the
appropriate Multicast DNS Reply packet.
mdnsd also performs Unicast and Multicast DNS Queries on behalf of
client processes, and maintains a cache of the replies.
mdnsd has no user-specifiable command-line argument, and users should
not run mdnsd manually.
LOGGING
There are several methods with which to examine mdnsd's internal state
for debugging and diagnostic purposes. The syslog(3C) logging levels
map as follows:
Error - Error messages
Warning - Client-initiated operations
Notice - Sleep proxy operations
Info - Informational messages
By default, only log level Error is logged.
A SIGUSR1 signal toggles additional logging, with Warning and Notice
enabled by default:
% sudo pkill -USR1 mdnsd
A SIGUSR2 signal toggles packet logging:
% sudo pkill -USR2 mdnsd
A SIGINFO signal will dump a snapshot summary of the internal state:
% sudo pkill -INFO mdnsd
FILES
/usr/lib/inet/mdnsd
INFO
For information on Multicast DNS, see http://www.multicastdns.org/
For information on DNS Service Discovery, see http://www.dns-sd.org/
For information on how to use the Multicast DNS and the DNS Service
Discovery APIs on Mac OS X and other platforms, see
http://developer.apple.com/bonjour/
For the source code to mdnsd, see
http://developer.apple.com/darwin/projects/bonjour/
INTERFACE STABILITY
Volatile.
SEE ALSO
dns-sd(8)
NOTES
The mdnsd service is managed by the service management facility,
smf(7), under the service identifier:
svc:/network/dns/multicast:default
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using svcadm(8). The service's
status can be queried using the svcs(1) command.
illumos January 28, 2016 illumos