[ntp:questions] Re: Different types of associations in the ntpq billboard
heiko.gerstung_removeme_ at meinberg.de
Tue Apr 11 14:03:37 UTC 2006
Danny Mayer wrote:
> Ronan Flood wrote:
>> mayer at ntp.isc.org (Danny Mayer) wrote:
>>>> Looking at ntpq_ops.c/decodeaddrtype(), it only shows "b" for an IPv4
>>>> non-multicast destination address ending in 255 -- I guess you're
>>>> subnetting, or using IPv6.
>>> That's not surprising since that basically defines broadcasting. IPv6
>>> does not have broadcast.
>> Fair enough for IPv6 then, but in IPv4 if your local net is say
>> 192.168.1.128/27, your broadcast address is 192.168.1.159.
>> Perhaps some use should be made of pmode=MODE_BROADCAST?
> Probably, but ntpq receives the data as-is and doesn't have access to
> that information. I will have to take another look at the definition of
> broadcast before I respond to the first part of your question.
The information that this is a broadcast packet should be in the ntp
packet itself, no? (mode 5 = broadcast)
Ye gods, we are drifting into hackers realm ...
Meinberg radio clocks: 25 years of accurate time worldwide
MEINBERG Radio Clocks
Stand alone ntp time servers and radio clocks based on GPS, DCF77 and
IRIG. Rackmount and desktop versions and PCI slot cards.
More information about the questions