Public bug reported:

Hi,

if I add a line like "interface ignore all" to /etc/ntp.conf in Ubuntu
10.04 and restart the ntp service, it will still listen on all
interfaces. We have two ntp servers running in our environment, all
other servers should just use ntp to synchronise time with them. Because
of this bug we actually have several hundred ntp servers on our
virtualized web servers.

This seems to be fixed in 12.04. If I add the line there, ntp only
listens on the localhost interface.

Full ntp.conf:

tinker panic 0
tinker step 0
driftfile /var/lib/ntp/ntp.drift
# Enable this if you want statistics to be logged.
#statsdir /var/log/ntpstats/
statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable
server 10.30.1.80 minpoll 4 maxpoll 4
server 10.30.1.81 minpoll 4 maxpoll 4
server 10.30.1.82 minpoll 4 maxpoll 4
interface ignore all

Package version:
apt-cache policy ntp
ntp:
  Installiert: 1:4.2.4p8+dfsg-1ubuntu2.1


Regards,

Michael

** Affects: ntp (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1077003

Title:
  ntp ignores config option "interface ignore all"

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