Package: ntp
Version: 1:4.2.8p12+dfsg-4
The manual page for ntpd documents the --mdns option. However using it
results in:
$ ntpd --mdns
/usr/sbin/ntpd: illegal option -- mdns
ntpd - NTP daemon program - Ver. 4.2.8p12
Usage: ntpd [ -<flag> [<val>] | --<name>[{=| }<val>] ]... \
[ <server1> ... <serverN> ]
Try 'ntpd --help' for more information.
$
ntpd implements this feature using a library and checks for the dns_sd.h
header during build. On a Debian buil, this header is not present and
the feature is compiled out. That results in an inconsistency between
documentation and actual feature set. Please consider removing the
option from the documentation. Other distributions such as Fedora also
keep this feature disabled[1].
Helmut
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1562155
