dnsextd(8) BSD System Manager's Manual dnsextd(8)
NAME
dnsextd -- BIND Extension Daemon
SYNOPSIS
dnsextd
DESCRIPTION
dnsextd is a daemon invoked at boot time, running alongside BIND 9, to
implement two EDNS0 extensions to the standard DNS protocol.
dnsextd allows clients to perform DNS Updates with an attached lease
lifetime, so that if the client crashes or is disconnected from the net-
work, its address records will be automatically deleted after the lease
expires.
dnsextd allows clients to perform long-lived queries. Instead of rapidly
polling the server to discover when information changes, long-lived
queries enable a client to indicate its interest in some set of data, and
then be notified asynchronously by the server whenever any of that data
changes.
dnsextd has no user-specifiable command-line argument, and users should
not run dnsextd manually.
SEE ALSO
mDNS(1) mDNSResponder(8)
For information on Dynamic DNS Update, see RFC 2136 "Dynamic Updates in
the Domain Name System (DNS UPDATE)"
For information on Dynamic DNS Update Leases, see
http://files.dns-sd.org/draft-dns-update-leases.txt
For information on Long-Lived Queries, see
http://files.dns-sd.org/draft-dns-llq.txt
BUGS
dnsextd bugs are tracked in Apple Radar component "mDNSResponder".
HISTORY
The dnsextd daemon first appeared in Mac OS X 10.4 (Tiger).
Darwin September 17, 2009 Darwin
Mac OS X 10.6 - Generated Thu Sep 17 20:25:50 CDT 2009