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.\" Hey, EMACS: -*- nroff -*-
.\" First parameter, NAME, should be all caps
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.\" other parameters are allowed: see man(7), man(1)
.TH MDNS-SCAN 1 "Jan 21, 2004" "0.4"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
.\" .nh disable hyphenation
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.SH NAME
mdns-scan \- Scan for mDNS/DNS-SD services published on the local network
.SH SYNOPSIS
.B mdns-scan
.SH DESCRIPTION
mdns-scan is a tool for scanning for mDNS/DNS-SD published services on the
local network. It issues a mDNS PTR query to the special RR
_services._dns-sd._udp.local for retrieving a list of all currently registered
services on the local link.
.SH OPTIONS
\fBmdns-scan\fP has no commandline options.
.SH NOTES
mdns-scan is not a good mDNS citizen since it queries continuously for services
and doesn't implement features like Duplicate Suppression. It is intended for
usage as a debugging tool only.
.P
mdns-scan is incomplete since it doesn't resolve mDNS services for you - it
just dumps their PTR RRs. To understand these records you need minimal
knowledge of DNS-SD and how it works.
.P
mdns-scan does not terminate on its own behalf. It scans for services
continuously until the user kills it by pressing C-c.
.P
mdns-scan does not rely on a local mDNS responder daemon. It has no
dependencies besides the GNU libc. It has been tested on Linux only.
.P
mdns-scan does NOT scan for local mDNS enabled hosts or A/AAAA RRs, it scans
for DNS-SD registered services, nothing else.
.SH SEE ALSO
.BR mDNSResponder(8)
.SH AUTHOR
\fBmdns-scan\fP has been written by Lennart Poettering <mzqrovna@0pointer.de>
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