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On Wednesday 31 Aug 2011 Michael D. Berger wrote: > On Wed, 31 Aug 2011 18:47:07 +0100, Anne Wilson wrote: > > On Wednesday 31 Aug 2011 Michael D. Berger wrote: > >> On Wed, 31 Aug 2011 13:53:59 +0100, Anne Wilson wrote: > [...] > > >> My original observation is in error as you will see. > >> > >> Actually, I first edited /etc/ntp.conf to have use my local time server > >> first, and then tock.usno.navy.mil. This time I had WireShark running > >> when I first brought up System Settings > Computer Administration > >> section > Date and Time. Merely bringing it up results is a barrage of > >> weird dns queries. Two I saw this time is "settings-personal.desktop" > >> and "settings-system.desktop". Is you might expect, dns responded "No > >> such name". These things stop and then repeat every now and then. On > >> the Date and Time gui, if I uncheck and recheck "Set date and time > >> automatically" with my local url entered and selected, I do get a > >> correct ntp transaction. > >> > >> I now see that the odd dns activity is not specifically related to Date > >> and Time, but occurs when I click and of various options. Why is this? > > > > Sheer blind guesswork - you are running a LAN, so packets will be > > constantly being moved around the network, though switch or router. My > > guess, which might be totally wrong, is that you are seeing harmless > > normal traffic. As you say, it doesn't look as though it is connected > > with the ntp query. > > > > As for the 'uncheck and recheck' giving you a result - that's probably > > because it checks on a schedule, and you re-started the schedule. > > > > Anne > > [...] > > I looked on another box on the LAN, a CentOS 5, and I saw nothing > like it. I am guessing that it is a new feature of kde or something > else in CentOS that is malfunctioning. In a sense it is harmless, but > creates useless noise on the net (it goes to outside dns servers) > and replaces something that should be doing something. I'll post > on the CentOS list. > Yes, there you will get advice from people more used to packet sniffing :-) I've done it, but not often enough to be really aware. Anne |
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